Re: DMD compiler - warning of unused variables

[jfondren via Digitalmars-d-learn]

On Monday, 16 August 2021 at 14:14:27 UTC, DLearner wrote:
Hi
Please see code below:
```
void main() {

   import std.stdio;

   size_t i;
   size_t j;

   i = 5;

   writeln("i = ",i);

}

```

Is there a compiler option that would warn that variable 'j' is 
defined but not used?

Best regards

dmd is anti-warning, so it'd have to be an error, which might be 
more annoying than it's worth. `dscanner --report thefile.d` 
includes "Variable j is never modified and could have been 
declared const or immutable." and "Variable j is never used." as 
issues, with line and column numbers.