non empty slices

[ag0aep6g via Digitalmars-d-learn]

On 06/03/2016 01:17 AM, Alex wrote:
> But still, I can't mark the f-method @nogc, and this is not due to the
> writeln calls... why GC is invoked, although everything is known and no
> memory allocation should happen?

It's the Algebraic. The `get` method isn't @nogc. The documentation [1] 
says that it may throw an exception, which is most probably being 
allocated through the GC. So that's a reason why it can't be @nogc.

The alternative `peek` method is not documented to throw an exception, 
but it's not @nogc either. No idea why. Maybe Algebraic does GC 
allocations internally. I wouldn't know for what, though. Or it misses a 
@nogc somewhere.


[1] http://dlang.org/phobos/std_variant#.VariantN.get