random k-sample of a file
bearophile
bearophileHUGS at lycos.com
Thu Oct 9 14:02:34 PDT 2008
Andrei Alexandrescu:
> But where's the D code you guys?
My third converted to D, using my libs:
import std.conv, d.all;
void main(string[] args) {
assert(args.length == 3);
string filename = args[1];
int k = toInt(args[2]);
assert (k > 0);
string[] chosen_lines;
foreach (i, line; xfile(filename))
if (i < k)
chosen_lines ~= line;
else
if (fastRandom() < (1.0 / (i+1)))
chosen_lines[randInt(k-1)] = line;
putr(chosen_lines);
}
> D is better than Python at scripting. Ahem.
I know many languages, and so far I have never found something better than Python to create working prototypes.
Bye,
bearophile
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