Suggest defining const parameter when appropriate

[fmease]

Helps a bit with #91119.
Following #105523's lead, I use placeholder /* Type */ instead of _ in the suggestion.
It should be easier for newcomers to parse.

@rustbot label A-diagnostics
r? diagnostics

[fmease]

Currently format!ting a format!ted string :]. If you would like me to, I can instead build up the suggestion with += and do some other refactorings like early returns and so on :)

[compiler-errors]

@bors r+

[bors]

📌 Commit f2acafe has been approved by compiler-errors

It is now in the queue for this repository.

[bors]

⌛ Testing commit f2acafe with merge 56e0626...

[bors]

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing 56e0626 to master...

[rust-timer]

Finished benchmarking commit (56e0626): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.6%	[-1.6%, -1.6%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	3.6%	[3.6%, 3.6%]	1
Regressions ❌ (secondary)	3.0%	[3.0%, 3.0%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	3.6%	[3.6%, 3.6%]	1

Cycles

This benchmark run did not return any relevant results for this metric.