Using core.reflect to check for unused parameters

[Stefan Koch]

On Friday, 3 September 2021 at 13:02:37 UTC, user1234 wrote:
> On Thursday, 2 September 2021 at 21:27:33 UTC, Stefan Koch 
> wrote:
>> [...]
>> now this visitor will reliably detect usage of parameters.
>
> BTW, I'm curious to know how this can work. Should not VarExp 
> (and not VarDecl) be overridden to mark ?

VerExps have a VarDecl member.
which the transitive visitor looks into for you.

You could look at VarExps but I chose to look into VarDecls 
instead.