On Thursday, January 22, 2015 10:42:59 bearophile via Digitalmars-d-learn wrote:
> Jonathan M Davis:
>
> > auto r = chain(uiota('a', 'z'), uiota('A', 'Z'), uiota('0',
> > '9'));
>
> Those ranges are probably open on the right.They probably are actually, since open on the right is usually how things are done, but that's easy fixed with some +1's. > Kagamin: > > > If you declare the string as immutable, the concatenation will > > be done at compile time. > > In function-scope I think you need enum. Yeah. immutable has nothing to do with compile time, though if you're talking about concatenating constants, there's a decent chance that they'd be optimized so that no concatenation occurs at runtime. However, to force anything to happen at compile time, you need to be initializing something that _has_ to be initialized at compile time (enum, static variable, direct initialization of member variable, etc.). If the compiler ever has a choice, it won't do it aside from built-in stuff that it understands well enough to translate as an optimization. - Jonathan M Davis
