On 25/04/12 10:34, SomeDude wrote:
Discussion here: http://d.puremagic.com/issues/show_bug.cgi?id=5650
On my Windows box, the following program
import std.stdio, std.container, std.range;
void main() {
enum int range = 100;
enum int n = 1_000_000;
auto t = redBlackTree!int(0);
for (int i = 0; i < n; i++) {
if (i > range)
t.removeFront();
t.insert(i);
}
writeln(walkLength(t[]));
//writeln(t[]);
}
runs in about 1793 ms.
The strange thing is, if I comment out the writeln line, runtimes are in
average *slower* by about 20 ms, with timings varying a little bit more
than when the writeln is included.
How can this be ?
Very strange.
Maybe there is some std library cleanup which is slower if nothing got
written?
