Avoid GC with closures

[Iakh via Digitalmars-d]

On Friday, 27 May 2016 at 10:34:38 UTC, Kagamin wrote:
> On Thursday, 26 May 2016 at 18:53:35 UTC, Iakh wrote:
>> void g() @nogc
>> {
>>     catch scope(void);
>>     int[N] arr = [/*...*/];
>>     arr[].sort!((a, b) => a > b);
>> }
>
> This compiles just fine and doesn't allocate:
> void g() @nogc
> {
>     int[2] arr = [5,4];
>     arr[].sort!((a, b) => a > b);
> }

Yeah. It doesn't capture any context. But once it does it
would be an error.