.juliahistory

format bank
format(bank)
format()
format
a = 2; b = 3; 
a
b
a = 2, b = 3; 
a = b, c = [1 2]
a
b
c
1 ~= 2
1 != 2
3 > 1 && 4 > 1
[1 0] & [0 1]
max([2 3])
maximum([2 3])
comp
x -> maximum(x)
A = randn(3,4)
A[A > 3]
A > 3
A < 3
A .< 3
A .> 3
A[A .> 3]
A[A .< 3]
3 .> A
{1,2}
A
A[:, [3 1 2]]
A
A[:, 3]
A[1,:]
A[1,:] = []
hold()
keyboard()
fopen()
open("notes.org")
x = open("notes.org")
x.ios
read(x)
read("notes.org")
close(x)
close(x)
if false
elseif
 true
3
end
disp(3)
display(3)
help(displa(
y)
1 + 1
for k = 1:5
    display(k)

end
k = 0;  
while (k < 5)
    k = k + 1;
end
k
rand(3)
rand = 3
rand
delete!(rand)
rand
load
save
input("ada")
copy(A)
cell(3)
[1,2,3]... 
[1,2]
[1 2]
x(y) = randn(2,3)
x
x1(y) = randn(2,3)
x1(2)
[a, b] = x1(2)
(a, b) = x1(2)
a
b
(a..., b...) = x1(2)
x1(a..., b...) = println(a, b)
x1(final a..., final b...) = println(a, b)
ccall(:clock, Int32, ())
34
ans
ans
f(x) = x * x
f(2)
ans
println(ans)
    bytestring(ccall(:getenv, Ptr{Uint8int8}, (Ptr{Uint8},), "SHELL"))

    bytestring(ccall(:getenv, Ptr{Uint8}, (Ptr{Uint8},), "SHELL"))

    using PyCall
    @pyimport math
    math.sin(math.pi / 4) - sin(pi / 4)
math.sin(math.pi / 4)
@time math.sin(math.pi / 4)
time
timeit
@time for i=1:100 math.sin(math.pi / 4) end
@time for i=1:10000 math.sin(math.pi / 4) end
@time for i=1:1000000 math.sin(math.pi / 4) end
@time for i=1:1000000 sin(pi / 4) end
typeof(())
typeof((Int))
typeof((Int,))
typeof((Int,4))
Tuple(3,4)
    Pkg.add("DataFrames")

using DataFrames
df = DataFrame()
df
df["A"] = 1:8
df
df["B"] = [0,1,0,1,0,1,0,1,0,1]
df["B"] = [0,1,0,1,0,1,0,1]
df
help(select)
select(randn(4,5), 2)
help(select!)
contains(["aer"], ["aer", "aer", "abr"])
for i in [1,2,3]
println(i)
end
df 
df[3] = 8:1
8:1
[8:1]
[8:-1:1]
df[3] = 8:-1:1
df 
df[3]
df["x3"]
help(read)
ls
ls()
read(open("sample_test_code.txt"), String)
read(open("sample_test_code.txt"), tring)
read(open("sample_test_code.txt"), string)
readall(open("sample_test_code.txt"))
open(readall, "sample_test_code.txt")
split(ans)
x = open(readall, "sample_test_code.txt")
split(x)
split(x, '\n')
strip("  adadad   ")
run(`cat sample_test_code.txt`)
'([1 2 3])
'
produce(3)
function x()
produce(1)
produce(2)
end
function xx()
produce(2)
end
xx()
Task(xx)
t = Task(xx)
consume(t)
consume(t)
super(FloatingPoint)