How can I dump an expression into log and execute it

[Dicebot via Digitalmars-d]

On Sunday, 13 July 2014 at 12:55:30 UTC, sigod wrote:
> Something like this would be possible if one could get string 
> representation of a lazy expression:
> ```
> void _logfx(lazy int expr)
> {
>     DebugLog(expr.stringof); // currently it outputs `expr()`
>     fx(expr);
> }
> ```

lazy expressions are in fact delegates so this can't work 
reliably if there is no access to _logfx source - it has to be 
template parameter or language spec adjusted to be more demanding 
:(