On Friday, 2 August 2013 at 11:37:27 UTC, Bosak wrote:
I want to create a mixin template such that:
mixin template ArgNull(alias arg, string name)
{
if(arg is null)
throw new Exception(name~" cannot be null.");
}
But is there a way to do that with only one template argument.
And then use it like:
string text = null;
mixin ArgNull!(text);
And the above mixin to make:
if(text is null)
throw new Exception("text cannot be null.");
I tested my code above and it seems it doesn't work either. I
came with an idea to
write:
mixin template ArgNull(string arg)
{
if(mixin(arg) is null)
throw new Exception(arg~" cannot be null.");
}
But it seems that I can't put an if in a template like that. Is
there a way to
implement this?