On Wed, 16 Feb 2011 17:58:12 -0500, jam <[email protected]> wrote:
On Wed, 16 Feb 2011 22:00:13 +0100, Andrej Mitrovic wrote:
On 2/16/11, jam <[email protected]> wrote:
void main()
{
auto a = [5,1,2,3,4,5,1];
auto index = countUntil(retro(a),5);
writeln(a[a.length-1-index .. a.length]);
}
That works for random-access ranges.
But I was under the impression that bidirectional ranges don't
necessarily have a length property?
Doh. That is exactly correct. I guess the following would work for
bidirectional ranges:
import std.stdio,std.algorithm,std.range,std.container;
void main()
{
auto a = [5,1,2,3,4,5,1];
auto index = countUntil(retro(a),5);
auto R = retro(take(retro(a),index+1));
writeln(R);
R[0] = 6;
writeln(a);
}
but this is just getting nutty.
This doesn't work, you can't retro take because take is not a
bidirectional range. It might work in the case of arrays, but it won't
work for something like a string.
-Steve
