Hello,
This bit of code for arrays:
Out[] map (In,Out) (In[] input, Out delegate (In) f) {
Out[] output = new Out[](input.length);
foreach (i,item ; input)
output [i] = f(item);
return output;
}
unittest {
char character (uint code) {return cast(char)code;}
uint[] codes = [0x61,0x62,0x63];
// functional style
writeln(map(codes, &character)); // "abc"
// OO style
writeln(codes.map(&character)); // "abc"
}
How to write this for ranges? I mean, with the same kind of interface to client
code (not the interface of std.algo.map).
And is there a way to write it so that it works both for ranges and other kinds
of sequences (arrays, strings); or even for anything "iterable" (AA, set, list,
tree...).
For ranges, I'm looking for something similar to:
Range!Out map (In,Out) (Range!In input, Out delegate (In) f) {...}
Indeed, the compiler should understand that Range!T is a type id just like T[].
Denis
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