List of possible enhancements to d-scanner

[RazvanN7]

Inspired from: https://issues.dlang.org/show_bug.cgi?id=17424

• Unused parameter -- of course you should be able to say "intentionally unused" (underscore prefix to name? a uda?)

• Unused imports -- this is super important to keep incremental compile times down

• Copying a large value (more than given threshold) - when passing parameters, in assignments, etc. Can always use explicit copy functions instead, pass by ref, etc.

• Allocating a large value on the stack (more than given threshold) - very useful for fibers with small stacks.

• Unused definitions/types: a function is not reachable by any non-private definition -- some uda should allow overriding this

• Signed/unsigned comparisons

• Function is @nogc but not marked as such

• Function is pure but not marked as such

• Function is nothrow but not marked as such

• Function is const but not marked as such

• Code was determined to be dead (will never be executed)

• Use of implicitly initialized variable (for variables implicitly set to .init), at least for floats/doubles where NaN is likely to be bug-prone.

• Use of voided variable (for variables init'd with =void)

• Constructor may throw - no automatic destruction will occur

• Conditional used is always true/false and compiled out -- must be able to wash away known-good instances