On Saturday, 21 July 2012 at 16:42:50 UTC, Enerqi wrote:
Hello
I'm playing around with my first D program and can't figure out
a way to chain a dynamic number of ranges. In this example I'm
trying to chain a two dimensional array into effectively a one
dimensional array, so I can later sort it as one sequence.
--------
import std.algorithm;
import std.range;
// n is determined at runtime
uint[][] arrays = new uint[][n];
foreach(ref a; arrays)
{
a = new uint[10];
copy(iota(10), a);
}
auto c = chain(arrays[0], arrays[1]);
foreach(a; arr[2..$])
{
c = chain(c, a);
}
--------
Gives a compile error:
Error: cannot implicitly convert expression (chain(c,a)) of
type Result to Result
any ideas?
Thanks.
The problem is that the first auto c is a chaining of an array
and array, and chain(c, a) is a chaining of a chain of arrays and
an array.
The way to do this is std.algorithm.joiner:
auto c = joiner(arrays, []);
Forgive me if I'm wrong (untested),
NMS
