On Tuesday, 23 October 2012 at 17:36:53 UTC, Simen Kjaeraas wrote:
On 2012-10-23, 19:21, mist wrote:
Hm, and all phobos functions should operate on narrow strings
as if they where not random-acessible? I am thinking about
something like commonPrefix from std.algorithm, which operates
on code points for strings.
Preferably, yes. If there are performance (or other) benefits
from
operating on code units, and it's just as safe, then operating
on code
units is ok.
Probably I don't undertsand it fully, but D approach has always
been "safe first, fast with some additional syntax". Back to
commonPrefix and take:
==========================
import std.stdio, std.traits, std.algorithm, std.range;
void main()
{
auto beer = "Пиво";
auto r1 = beer.take(2);
auto pony = "Пони";
auto r2 = commonPrefix(beer, pony);
writeln(r1);
writeln(r2);
}
==========================
First one returns 2 symbols. Second one - 3 code points and
broken string. There is no way such incosistency by-default in
standard library is understandable by a newbie.
