opSlice and $

[Witold Baryluk]

Dnia Tue, 11 Sep 2007 18:08:12 -0400
"Jarrett Billingsley" <kb3ctd2 at yahoo.com> napisał/a:

> "Robert Fraser" <fraserofthenight at gmail.com> wrote in message 
> news:fc70uu$o8r$1 at digitalmars.com...
> > Sean Kelly Wrote:
> >>
> >> I would love this.  It would be quite useful for ordered
> >> associative sequences (red-black tree, etc).
> >
> > Got my vote!
> >
> 
> ...?
> 
[cut]

Thanks. I have read D specification too literally :)

Indeed this works:


import std.stdio;

class A {
        char[] opSlice(char[] x, char[] y) {
                return x ~ y;
        }

        char[] opSlice(char[] x, int y) {
                char[] z = "";
                for (int i = 0; i < y; i++) {
                        z ~= x;
                }
                return z;
        }
}


void main() {
        auto a = new A();
        auto b = a["a" .. "z"];
        writefln(b); // prints az
        auto c = a["a" .. 7];
        writefln(c); // prints aaaaaaaa
}


-- 
Witold Baryluk, aleph0
MAIL: baryluk at smp.if.uj.edu.pl
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