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<div class="section" id="stdlib-functions">
<span id="index-0"></span><h1>Stdlib Functions<a class="headerlink" href="#stdlib-functions" title="Permalink to this headline">¶</a></h1>
<p>In this chapter we are going to learn about functions in the stdlib.ring</p>
<p>Before using the functions in the library, We must load the library first</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">load</span> <span class="s">"stdlib.ring"</span>
</pre></div>
</div>
<p>Instead of using stdlib.ring we can use stdlibcore.ring</p>
<p>Using stdlibcore.ring we can use the StdLib functions (Without Classes)</p>
<p>This is useful when developing standalone console applications</p>
<p>Because using stdlib.ring (functions & classes) will load libraries like RingLibCurl, RingOpenSSL, etc.</p>
<div class="section" id="puts-function">
<span id="index-1"></span><h2>Puts() function<a class="headerlink" href="#puts-function" title="Permalink to this headline">¶</a></h2>
<p>print the value then print new line (nl)</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">puts</span><span class="p">(</span><span class="n">expr</span><span class="p">)</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Hello, World!"</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="print-function">
<span id="index-2"></span><h2>Print() function<a class="headerlink" href="#print-function" title="Permalink to this headline">¶</a></h2>
<p>print string - support \n,\t and \r</p>
<p>Also we can use #{variable_name} to insert variables values.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">print</span><span class="p">(</span><span class="kt">string</span><span class="p">)</span> <span class="o">---></span> <span class="kt">String</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">print</span><span class="p">(</span><span class="s">"</span><span class="se">\n</span><span class="s">Hello, World</span><span class="se">\n\n</span><span class="s">How are you? </span><span class="se">\t\t</span><span class="s"> I'm fine!</span><span class="se">\n</span><span class="s">"</span><span class="p">)</span>
<span class="n">x</span><span class="o">=</span><span class="mi">10</span> <span class="n">y</span><span class="o">=</span><span class="mi">20</span>
<span class="n">print</span><span class="p">(</span><span class="s">"</span><span class="se">\n</span><span class="s">x value = #{x} , y value = #{y} </span><span class="se">\n</span><span class="s">"</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="print2str-function">
<span id="index-3"></span><h2>Print2Str() Function<a class="headerlink" href="#print2str-function" title="Permalink to this headline">¶</a></h2>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">print2Str</span><span class="p">(</span><span class="kt">string</span><span class="p">)</span> <span class="o">---></span> <span class="kt">String</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">world</span> <span class="o">=</span> <span class="s">"World!"</span>
<span class="n">mystring</span> <span class="o">=</span> <span class="n">print2str</span><span class="p">(</span><span class="s">"Hello, #{world} </span><span class="se">\n</span><span class="s">In Year </span><span class="se">\n</span><span class="s">#{2000+17} </span><span class="se">\n</span><span class="s">"</span><span class="p">)</span>
<span class="k">see</span> <span class="n">mystring</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
<p>Output:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Hello</span><span class="p">,</span> <span class="n">World</span><span class="o">!</span>
<span class="k">In</span> <span class="n">Year</span>
<span class="mi">2017</span>
</pre></div>
</div>
</div>
<div class="section" id="getstring-function">
<span id="index-4"></span><h2>GetString() function<a class="headerlink" href="#getstring-function" title="Permalink to this headline">¶</a></h2>
<p>Get input from the keyboard - return value as string</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">getstring</span><span class="p">()</span> <span class="o">---></span> <span class="kt">string</span>
</pre></div>
</div>
</div>
<div class="section" id="getnumber-function">
<span id="index-5"></span><h2>GetNumber() function<a class="headerlink" href="#getnumber-function" title="Permalink to this headline">¶</a></h2>
<p>Get input from the keyboard - return value as number</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">getnumber</span><span class="p">()</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
</div>
<div class="section" id="apppath-function">
<span id="index-6"></span><h2>AppPath() function<a class="headerlink" href="#apppath-function" title="Permalink to this headline">¶</a></h2>
<p>Get the path of the application folder</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">AppPath</span><span class="p">()</span> <span class="o">---></span> <span class="n">The</span> <span class="n">path</span> <span class="n">as</span> <span class="kt">String</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Application Path</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test AppPath()"</span><span class="p">)</span>
<span class="k">See</span> <span class="n">AppPath</span><span class="p">()</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="justfilepath-function">
<span id="index-7"></span><h2>JustFilePath() function<a class="headerlink" href="#justfilepath-function" title="Permalink to this headline">¶</a></h2>
<p>Get the path of the file, remove the file name.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">JustFilePath</span><span class="p">(</span><span class="n">cFile</span><span class="p">)</span> <span class="o">---></span> <span class="n">The</span> <span class="n">path</span> <span class="n">as</span> <span class="kt">String</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">load</span> <span class="s">"stdlib.ring"</span>
<span class="k">see</span> <span class="n">justfilePath</span><span class="p">(</span><span class="s">"b:</span><span class="se">\r</span><span class="s">ing</span><span class="se">\a</span><span class="s">pplications</span><span class="se">\r</span><span class="s">note</span><span class="se">\r</span><span class="s">note.ring"</span><span class="p">)</span>
</pre></div>
</div>
<p>Output:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">b</span><span class="p">:</span><span class="o">\</span><span class="n">ring</span><span class="o">\</span><span class="n">applications</span><span class="o">\</span><span class="n">rnote</span><span class="o">\</span>
</pre></div>
</div>
</div>
<div class="section" id="justfilename-function">
<span id="index-8"></span><h2>JustFileName() function<a class="headerlink" href="#justfilename-function" title="Permalink to this headline">¶</a></h2>
<p>Get the file, remove the file path.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">JustFileName</span><span class="p">(</span><span class="n">cFile</span><span class="p">)</span> <span class="o">---></span> <span class="n">The</span> <span class="n">file</span> <span class="n">name</span> <span class="n">as</span> <span class="kt">String</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">load</span> <span class="s">"stdlib.ring"</span>
<span class="k">see</span> <span class="n">justfileName</span><span class="p">(</span><span class="s">"b:</span><span class="se">\r</span><span class="s">ing</span><span class="se">\a</span><span class="s">pplications</span><span class="se">\r</span><span class="s">note</span><span class="se">\r</span><span class="s">note.ring"</span><span class="p">)</span>
</pre></div>
</div>
<p>Output:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">rnote</span><span class="p">.</span><span class="n">ring</span>
</pre></div>
</div>
</div>
<div class="section" id="value-function">
<span id="index-9"></span><h2>Value() function<a class="headerlink" href="#value-function" title="Permalink to this headline">¶</a></h2>
<p>create a copy from a list or object</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">value</span><span class="p">(</span><span class="kt">List</span><span class="p">)</span> <span class="o">---></span> <span class="k">new</span> <span class="kt">list</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">aList</span> <span class="o">=</span> <span class="mi">1</span><span class="p">:</span><span class="mi">10</span>
<span class="n">del</span><span class="p">(</span><span class="n">value</span><span class="p">(</span><span class="n">aList</span><span class="p">),</span><span class="mi">1</span><span class="p">)</span> <span class="c"># delete first item</span>
<span class="k">see</span> <span class="n">aList</span> <span class="c"># print numbers from 1 to 10</span>
</pre></div>
</div>
</div>
<div class="section" id="times-function">
<span id="index-10"></span><h2>Times() function<a class="headerlink" href="#times-function" title="Permalink to this headline">¶</a></h2>
<p>Execute a Function nCount times</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Times</span><span class="p">(</span><span class="n">nCount</span><span class="p">,</span><span class="n">function</span><span class="p">)</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Times()"</span><span class="p">)</span>
<span class="n">Times</span> <span class="p">(</span> <span class="mi">3</span> <span class="p">,</span> <span class="k">func</span> <span class="p">{</span> <span class="k">see</span> <span class="s">"Hello, World!"</span> <span class="o">+</span> <span class="n">nl</span> <span class="p">}</span> <span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="map-function">
<span id="index-11"></span><h2>Map() function<a class="headerlink" href="#map-function" title="Permalink to this headline">¶</a></h2>
<p>Execute a Function on each list item</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Map</span><span class="p">(</span><span class="n">alist</span><span class="p">,</span><span class="n">function</span><span class="p">)</span> <span class="o">---></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Map()"</span><span class="p">)</span>
<span class="k">See</span> <span class="n">Map</span><span class="p">(</span> <span class="mi">1</span><span class="p">:</span><span class="mi">10</span><span class="p">,</span> <span class="k">func</span> <span class="n">x</span> <span class="p">{</span> <span class="k">return</span> <span class="n">x</span><span class="o">*</span><span class="n">x</span> <span class="p">}</span> <span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="filter-function">
<span id="index-12"></span><h2>Filter() function<a class="headerlink" href="#filter-function" title="Permalink to this headline">¶</a></h2>
<p>Execute a Function on each list item to filter items</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Filter</span><span class="p">(</span><span class="n">alist</span><span class="p">,</span><span class="n">function</span><span class="p">)</span> <span class="o">---></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Filter()"</span><span class="p">)</span>
<span class="k">See</span> <span class="n">Filter</span><span class="p">(</span> <span class="mi">1</span><span class="p">:</span><span class="mi">10</span> <span class="p">,</span> <span class="k">func</span> <span class="n">x</span> <span class="p">{</span> <span class="k">if</span> <span class="n">x</span> <span class="o"><=</span> <span class="mi">5</span> <span class="k">return</span> <span class="kp">true</span> <span class="k">else</span> <span class="k">return</span> <span class="kp">false</span> <span class="k">ok</span> <span class="p">}</span> <span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="split-function">
<span id="index-13"></span><h2>Split() function<a class="headerlink" href="#split-function" title="Permalink to this headline">¶</a></h2>
<p>Convert string words to list items</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Split</span><span class="p">(</span><span class="n">cstring</span><span class="p">,</span><span class="n">delimiter</span><span class="p">)</span> <span class="o">---></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Split()"</span><span class="p">)</span>
<span class="k">See</span> <span class="n">Split</span><span class="p">(</span><span class="s">"one two three four five"</span><span class="p">,</span><span class="s">" "</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="splitmany-function">
<span id="index-14"></span><h2>SplitMany() function<a class="headerlink" href="#splitmany-function" title="Permalink to this headline">¶</a></h2>
<p>Convert string words to list items. Allow many delimiters.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">SplitMany</span><span class="p">(</span><span class="n">cstring</span><span class="p">,</span><span class="n">delimiters</span> <span class="n">as</span> <span class="kt">string</span> <span class="ow">or</span> <span class="kt">list</span><span class="p">)</span> <span class="o">--></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test SplitMany()"</span><span class="p">)</span>
<span class="k">See</span> <span class="n">SplitMany</span><span class="p">(</span><span class="s">"one,two,three,four and five"</span><span class="p">,</span><span class="s">" ,"</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="capitalized-function">
<span id="index-15"></span><h2>Capitalized() function<a class="headerlink" href="#capitalized-function" title="Permalink to this headline">¶</a></h2>
<p>Return a copy of a string with the first letter capitalized</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Capitalized</span><span class="p">(</span><span class="kt">string</span><span class="p">)</span> <span class="o">---></span> <span class="kt">string</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Capitalized()"</span><span class="p">)</span>
<span class="k">See</span> <span class="n">capitalized</span><span class="p">(</span><span class="s">"welcome to the Ring Programming Language"</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="isspecial-function">
<span id="index-16"></span><h2>IsSpecial() function<a class="headerlink" href="#isspecial-function" title="Permalink to this headline">¶</a></h2>
<p>Check whether a character is special or not</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">IsSpecial</span><span class="p">(</span><span class="n">char</span><span class="p">)</span> <span class="o">---></span> <span class="kp">True</span><span class="o">/</span><span class="kp">False</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Isspecial()"</span><span class="p">)</span>
<span class="k">See</span> <span class="s">"Isspecial = "</span> <span class="o">+</span> <span class="n">isSpecial</span><span class="p">(</span><span class="s">"%"</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="isvowel-function">
<span id="index-17"></span><h2>IsVowel() function<a class="headerlink" href="#isvowel-function" title="Permalink to this headline">¶</a></h2>
<p>Check whether a character is vowel or not</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">IsVowel</span><span class="p">(</span><span class="n">char</span><span class="p">)</span> <span class="o">---></span> <span class="kp">True</span><span class="o">/</span><span class="kp">False</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Isvowel()"</span><span class="p">)</span>
<span class="k">See</span> <span class="s">"Isvowel = "</span> <span class="o">+</span> <span class="n">isVowel</span><span class="p">(</span><span class="s">"c"</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="linecount-function">
<span id="index-18"></span><h2>LineCount() function<a class="headerlink" href="#linecount-function" title="Permalink to this headline">¶</a></h2>
<p>Return the lines count in a text file.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">LineCount</span><span class="p">(</span><span class="n">cFileName</span><span class="p">)</span> <span class="o">---></span> <span class="n">Lines</span> <span class="n">Count</span> <span class="n">as</span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Linecount()"</span><span class="p">)</span>
<span class="k">See</span> <span class="s">"the number of lines = "</span> <span class="o">+</span> <span class="n">lineCount</span><span class="p">(</span><span class="s">"test.ring"</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="factorial-function">
<span id="index-19"></span><h2>Factorial() function<a class="headerlink" href="#factorial-function" title="Permalink to this headline">¶</a></h2>
<p>Return the factorial of a number</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Factorial</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Factorial()"</span><span class="p">)</span>
<span class="k">see</span> <span class="s">"6 factorial is : "</span> <span class="o">+</span> <span class="n">Factorial</span><span class="p">(</span><span class="mi">6</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="fibonacci-function">
<span id="index-20"></span><h2>Fibonacci() function<a class="headerlink" href="#fibonacci-function" title="Permalink to this headline">¶</a></h2>
<p>Return the fibonacci number</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Fibonacci</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Fibonacci()"</span><span class="p">)</span>
<span class="k">see</span> <span class="s">"6 Fibonacci is : "</span> <span class="o">+</span> <span class="n">Fibonacci</span><span class="p">(</span><span class="mi">6</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="isprime-function">
<span id="index-21"></span><h2>IsPrime() function<a class="headerlink" href="#isprime-function" title="Permalink to this headline">¶</a></h2>
<p>Check whether a number is prime or not</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">isprime</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="n">Number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Isprime()"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">isPrime</span><span class="p">(</span><span class="mi">16</span><span class="p">)</span> <span class="k">see</span> <span class="s">"16 is a prime number"</span>
<span class="k">else</span> <span class="k">see</span> <span class="s">"16 is not a prime number"</span> <span class="k">ok</span>
</pre></div>
</div>
</div>
<div class="section" id="sign-function">
<span id="index-22"></span><h2>Sign() function<a class="headerlink" href="#sign-function" title="Permalink to this headline">¶</a></h2>
<p>Returns an integer value indicating the sign of a number.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Sign</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span> <span class="p">(</span> <span class="o">-</span><span class="mi">1</span> <span class="o">=</span> <span class="n">negative</span> <span class="p">,</span> <span class="mi">0</span> <span class="p">,</span> <span class="mi">1</span> <span class="p">(</span><span class="n">positive</span><span class="p">)</span> <span class="p">)</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Sign()"</span><span class="p">)</span>
<span class="k">see</span> <span class="s">"sign of 12 is = "</span> <span class="o">+</span> <span class="n">sign</span><span class="p">(</span><span class="mi">12</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="list2file-function">
<span id="index-23"></span><h2>List2File() function<a class="headerlink" href="#list2file-function" title="Permalink to this headline">¶</a></h2>
<p>Write list items to text file (each item in new line).</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">List2File</span><span class="p">(</span><span class="n">aList</span><span class="p">,</span><span class="n">cFileName</span><span class="p">)</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Test List2File</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test List2File()"</span><span class="p">)</span>
<span class="n">list2file</span><span class="p">(</span><span class="mi">1</span><span class="p">:</span><span class="mi">100</span><span class="p">,</span><span class="s">"myfile.txt"</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="file2list-function">
<span id="index-24"></span><h2>File2List() function<a class="headerlink" href="#file2list-function" title="Permalink to this headline">¶</a></h2>
<p>Read text file and convert lines to list items</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">File2List</span><span class="p">(</span><span class="n">cFileName</span><span class="p">)</span> <span class="o">---></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Test File2List</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test File2List()"</span><span class="p">)</span>
<span class="k">see</span> <span class="n">len</span><span class="p">(</span><span class="n">file2list</span><span class="p">(</span><span class="s">"myfile.txt"</span><span class="p">))</span>
</pre></div>
</div>
</div>
<div class="section" id="startswith-function">
<span id="index-25"></span><h2>StartsWith() function<a class="headerlink" href="#startswith-function" title="Permalink to this headline">¶</a></h2>
<p>Returns true if the given string starts with the specified substring.</p>
<p>Leading white spaces are ignored.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">StartsWith</span><span class="p">(</span><span class="kt">string</span><span class="p">,</span> <span class="n">substring</span><span class="p">)</span> <span class="o">---></span> <span class="kp">True</span><span class="o">/</span><span class="kp">False</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Startswith()"</span><span class="p">)</span>
<span class="k">see</span> <span class="n">Startswith</span><span class="p">(</span><span class="s">"CalmoSoft"</span><span class="p">,</span> <span class="s">"Calmo"</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="endswith-function">
<span id="index-26"></span><h2>EndsWith() function<a class="headerlink" href="#endswith-function" title="Permalink to this headline">¶</a></h2>
<p>Returns true if the given string ends with the specified substring.</p>
<p>Trailing white spaces are ignored.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Endswith</span><span class="p">(</span><span class="kt">string</span><span class="p">,</span> <span class="n">substring</span><span class="p">)</span> <span class="o">---></span> <span class="kp">True</span><span class="o">/</span><span class="kp">False</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Endswith()"</span><span class="p">)</span>
<span class="k">see</span> <span class="n">endsWith</span><span class="p">(</span><span class="s">"CalmoSoft"</span><span class="p">,</span> <span class="s">"Soft"</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="gcd-function">
<span id="index-27"></span><h2>GCD() function<a class="headerlink" href="#gcd-function" title="Permalink to this headline">¶</a></h2>
<p>Finding of the greatest common divisor of two integers.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Gcd</span><span class="p">(</span><span class="n">number</span><span class="p">,</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Gcd()"</span><span class="p">)</span>
<span class="k">see</span> <span class="n">gcd</span> <span class="p">(</span><span class="mi">24</span><span class="p">,</span> <span class="mi">32</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="lcm-function">
<span id="index-28"></span><h2>LCM() function<a class="headerlink" href="#lcm-function" title="Permalink to this headline">¶</a></h2>
<p>Compute the least common multiple of two integers.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">lcm</span><span class="p">(</span><span class="n">number</span><span class="p">,</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Lcm()"</span><span class="p">)</span>
<span class="k">see</span> <span class="n">Lcm</span><span class="p">(</span><span class="mi">24</span><span class="p">,</span><span class="mi">36</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="sumlist-function">
<span id="index-29"></span><h2>SumList() function<a class="headerlink" href="#sumlist-function" title="Permalink to this headline">¶</a></h2>
<p>Compute the sum of a list of integers.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">sumlist</span><span class="p">(</span><span class="kt">list</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Sumlist()"</span><span class="p">)</span>
<span class="n">aList</span> <span class="o">=</span> <span class="o">[</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="o">]</span>
<span class="k">see</span> <span class="n">Sumlist</span><span class="p">(</span><span class="n">aList</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="prodlist-function">
<span id="index-30"></span><h2>ProdList() function<a class="headerlink" href="#prodlist-function" title="Permalink to this headline">¶</a></h2>
<p>Compute the product of a list of integers.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">prodlist</span><span class="p">(</span><span class="kt">list</span><span class="p">)</span> <span class="o">---></span> <span class="n">number</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Prodlist()"</span><span class="p">)</span>
<span class="n">aList</span> <span class="o">=</span> <span class="o">[</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="o">]</span>
<span class="k">see</span> <span class="n">Prodlist</span><span class="p">(</span><span class="n">aList</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="evenorodd-function">
<span id="index-31"></span><h2>EvenOrOdd() function<a class="headerlink" href="#evenorodd-function" title="Permalink to this headline">¶</a></h2>
<p>Test whether an integer is even or odd.</p>
<p>Result of test (1=odd 2=even).</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">evenorodd</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="mi">1</span> <span class="p">(</span><span class="n">odd</span><span class="p">)</span> <span class="ow">or</span> <span class="mi">2</span> <span class="p">(</span><span class="n">even</span><span class="p">)</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Evenorodd()"</span><span class="p">)</span>
<span class="n">nr</span> <span class="o">=</span> <span class="mi">17</span>
<span class="k">see</span> <span class="n">Evenorodd</span><span class="p">(</span><span class="n">nr</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="factors-function">
<span id="index-32"></span><h2>Factors() function<a class="headerlink" href="#factors-function" title="Permalink to this headline">¶</a></h2>
<p>Compute the factors of a positive integer.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">factors</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="kt">list</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Factors()"</span><span class="p">)</span>
<span class="n">n</span> <span class="o">=</span> <span class="mi">45</span>
<span class="n">aList</span> <span class="o">=</span> <span class="n">factors</span><span class="p">(</span><span class="n">n</span><span class="p">)</span>
<span class="k">see</span> <span class="s">"Factors of "</span> <span class="o">+</span> <span class="n">n</span> <span class="o">+</span> <span class="s">" = "</span>
<span class="k">for</span> <span class="n">i</span> <span class="o">=</span> <span class="mi">1</span> <span class="k">to</span> <span class="n">len</span><span class="p">(</span><span class="n">aList</span><span class="p">)</span>
<span class="k">see</span> <span class="s">""</span> <span class="o">+</span> <span class="n">aList</span><span class="o">[</span><span class="n">i</span><span class="o">]</span> <span class="o">+</span> <span class="s">" "</span>
<span class="k">next</span>
</pre></div>
</div>
</div>
<div class="section" id="ispalindrome-function">
<span id="index-33"></span><h2>IsPalindrome() function<a class="headerlink" href="#ispalindrome-function" title="Permalink to this headline">¶</a></h2>
<p>Check if a sequence of characters is a palindrome or not.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">IsPalindrome</span><span class="p">(</span><span class="kt">String</span><span class="p">)</span> <span class="o">---></span> <span class="kp">True</span><span class="o">/</span><span class="kp">False</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test IsPalindrome()"</span><span class="p">)</span>
<span class="n">cString</span> <span class="o">=</span> <span class="s">"radar"</span>
<span class="k">see</span> <span class="n">IsPalindrome</span><span class="p">(</span><span class="n">cString</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="isleapyear-function">
<span id="index-34"></span><h2>IsLeapYear() function<a class="headerlink" href="#isleapyear-function" title="Permalink to this headline">¶</a></h2>
<p>Check whether a given year is a leap year in the Gregorian calendar.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Isleapyear</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="kp">True</span><span class="o">/</span><span class="kp">False</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Isleapyear()"</span><span class="p">)</span>
<span class="n">year</span> <span class="o">=</span> <span class="mi">2016</span>
<span class="k">if</span> <span class="n">Isleapyear</span><span class="p">(</span><span class="n">year</span><span class="p">)</span> <span class="k">see</span> <span class="s">""</span> <span class="o">+</span> <span class="n">year</span> <span class="o">+</span> <span class="s">" is a leap year."</span>
<span class="k">else</span> <span class="k">see</span> <span class="s">""</span> <span class="o">+</span> <span class="n">year</span> <span class="o">+</span> <span class="s">" is not a leap year."</span> <span class="k">ok</span>
</pre></div>
</div>
</div>
<div class="section" id="binarydigits-function">
<span id="index-35"></span><h2>BinaryDigits() function<a class="headerlink" href="#binarydigits-function" title="Permalink to this headline">¶</a></h2>
<p>Compute the sequence of binary digits for a given non-negative integer.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">binarydigits</span><span class="p">(</span><span class="n">number</span><span class="p">)</span> <span class="o">---></span> <span class="kt">string</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Binarydigits()"</span><span class="p">)</span>
<span class="n">b</span> <span class="o">=</span> <span class="mi">35</span>
<span class="k">see</span> <span class="s">"Binary digits of "</span> <span class="o">+</span> <span class="n">b</span> <span class="o">+</span> <span class="s">" = "</span> <span class="o">+</span> <span class="n">Binarydigits</span><span class="p">(</span><span class="n">b</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="matrixmulti-function">
<span id="index-36"></span><h2>MatrixMulti() function<a class="headerlink" href="#matrixmulti-function" title="Permalink to this headline">¶</a></h2>
<p>Multiply two matrices together.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Matrixmulti</span><span class="p">(</span><span class="kt">List</span><span class="p">,</span><span class="kt">List</span><span class="p">)</span> <span class="o">---></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Multiply two matrices together.</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Matrixmulti()"</span><span class="p">)</span>
<span class="n">A</span> <span class="o">=</span> <span class="o">[[</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mi">3</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">7</span><span class="p">,</span><span class="mi">8</span><span class="p">,</span><span class="mi">9</span><span class="o">]]</span>
<span class="n">B</span> <span class="o">=</span> <span class="o">[[</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="o">]]</span>
<span class="k">see</span> <span class="n">Matrixmulti</span><span class="p">(</span><span class="n">A</span><span class="p">,</span> <span class="n">B</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="matrixtrans-function">
<span id="index-37"></span><h2>MatrixTrans() function<a class="headerlink" href="#matrixtrans-function" title="Permalink to this headline">¶</a></h2>
<p>Transpose an arbitrarily sized rectangular Matrix.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Matrixtrans</span><span class="p">(</span><span class="kt">List</span><span class="p">)</span> <span class="o">---></span> <span class="kt">List</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Transpose an arbitrarily sized rectangular Matrix.</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Matrixtrans()"</span><span class="p">)</span>
<span class="n">matrix</span> <span class="o">=</span> <span class="o">[[</span><span class="mi">78</span><span class="p">,</span><span class="mi">19</span><span class="p">,</span><span class="mi">30</span><span class="p">,</span><span class="mi">12</span><span class="p">,</span><span class="mi">36</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">49</span><span class="p">,</span><span class="mi">10</span><span class="p">,</span><span class="mi">65</span><span class="p">,</span><span class="mi">42</span><span class="p">,</span><span class="mi">50</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">30</span><span class="p">,</span><span class="mi">93</span><span class="p">,</span><span class="mi">24</span><span class="p">,</span><span class="mi">78</span><span class="p">,</span><span class="mi">10</span><span class="o">]</span><span class="p">,</span> <span class="o">[</span><span class="mi">39</span><span class="p">,</span><span class="mi">68</span><span class="p">,</span><span class="mi">27</span><span class="p">,</span><span class="mi">64</span><span class="p">,</span><span class="mi">29</span><span class="o">]]</span>
<span class="k">see</span> <span class="n">Matrixtrans</span><span class="p">(</span><span class="n">matrix</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="dayofweek-function">
<span id="index-38"></span><h2>DayOfWeek() function<a class="headerlink" href="#dayofweek-function" title="Permalink to this headline">¶</a></h2>
<p>Return the day of the week of given date. (yyyy-mm-dd)</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">dayofweek</span><span class="p">(</span><span class="kt">string</span><span class="p">)</span> <span class="o">---></span> <span class="kt">string</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Return the day of the week of given date.</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Dayofweek()"</span><span class="p">)</span>
<span class="n">date</span> <span class="o">=</span> <span class="s">"2016-04-24"</span>
<span class="k">see</span> <span class="s">"Data : "</span> <span class="o">+</span> <span class="n">date</span> <span class="o">+</span> <span class="s">" - Day : "</span> <span class="o">+</span> <span class="n">Dayofweek</span><span class="p">(</span><span class="n">date</span><span class="p">)</span> <span class="o">+</span> <span class="n">nl</span>
</pre></div>
</div>
</div>
<div class="section" id="permutation-function">
<span id="index-39"></span><h2>Permutation() function<a class="headerlink" href="#permutation-function" title="Permalink to this headline">¶</a></h2>
<p>Generates all permutations of n different numerals.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">permutation</span><span class="p">(</span><span class="kt">list</span><span class="p">)</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Generates all permutations of n different numerals</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Permutation()"</span><span class="p">)</span>
<span class="kt">list</span> <span class="o">=</span> <span class="o">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="o">]</span>
<span class="k">for</span> <span class="n">perm</span> <span class="o">=</span> <span class="mi">1</span> <span class="k">to</span> <span class="mi">24</span>
<span class="k">for</span> <span class="n">i</span> <span class="o">=</span> <span class="mi">1</span> <span class="k">to</span> <span class="n">len</span><span class="p">(</span><span class="kt">list</span><span class="p">)</span>
<span class="k">see</span> <span class="kt">list</span><span class="o">[</span><span class="n">i</span><span class="o">]</span> <span class="o">+</span> <span class="s">" "</span>
<span class="k">next</span>
<span class="k">see</span> <span class="n">nl</span>
<span class="n">Permutation</span><span class="p">(</span><span class="kt">list</span><span class="p">)</span>
<span class="k">next</span>
</pre></div>
</div>
</div>
<div class="section" id="readline-function">
<span id="index-40"></span><h2>ReadLine() function<a class="headerlink" href="#readline-function" title="Permalink to this headline">¶</a></h2>
<p>Read line from file</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">readline</span><span class="p">(</span><span class="n">fp</span><span class="p">)</span> <span class="o">---></span> <span class="kt">string</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Read a file line by line.</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Readline()"</span><span class="p">)</span>
<span class="n">fp</span> <span class="o">=</span> <span class="n">fopen</span><span class="p">(</span><span class="s">"test.ring"</span><span class="p">,</span><span class="s">"r"</span><span class="p">)</span>
<span class="k">while</span> <span class="ow">not</span> <span class="n">feof</span><span class="p">(</span><span class="n">fp</span><span class="p">)</span>
<span class="k">See</span> <span class="n">Readline</span><span class="p">(</span><span class="n">fp</span><span class="p">)</span> <span class="k">end</span>
<span class="n">fclose</span><span class="p">(</span><span class="n">fp</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="substring-function">
<span id="index-41"></span><h2>SubString() function<a class="headerlink" href="#substring-function" title="Permalink to this headline">¶</a></h2>
<p>Return a position of a substring starting from a given position in a string.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Substring</span><span class="p">(</span><span class="n">str</span><span class="p">,</span><span class="n">substr</span><span class="p">,</span><span class="n">npos</span><span class="p">)</span> <span class="o">---></span> <span class="kt">string</span>
</pre></div>
</div>
<p>Example:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="k">Load</span> <span class="s">"stdlib.ring"</span>
<span class="c"># Return a position of a substring starting from a given position in a string.</span>
<span class="n">Puts</span><span class="p">(</span><span class="s">"Test Substring()"</span><span class="p">)</span>
<span class="n">a</span> <span class="o">=</span> <span class="s">"abcxyzqweabc"</span>
<span class="n">b</span> <span class="o">=</span> <span class="s">"abc"</span>
<span class="n">i</span> <span class="o">=</span> <span class="mi">4</span>
<span class="k">see</span> <span class="n">substring</span><span class="p">(</span><span class="n">a</span><span class="p">,</span><span class="n">b</span><span class="p">,</span><span class="n">i</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="changestring-function">
<span id="index-42"></span><h2>ChangeString() function<a class="headerlink" href="#changestring-function" title="Permalink to this headline">¶</a></h2>
<p>Change substring from given position to a given position with another substring.</p>
<p>Syntax:</p>
<div class="highlight-ring notranslate"><div class="highlight"><pre><span></span><span class="n">Changestring</span><span class="p">(</span><span class="n">cString</span><span class="p">,</span> <span class="n">nPos1</span><span class="p">,</span> <span class="n">nPos2</span><span class="p">,</span> <span class="n">cSubstr</span><span class="p">)</span> <span class="o">---></span> <span class="n">cString</span>
</pre></div>
</div>