I do not know this is my first attempt and it is almost same fast as wc
on my pc:
int main(string[] args)
{
import std.stdio : writeln, writefln, File;
import std.array : uninitializedArray;
auto f = File("data");
size_t c = 0;
auto buffer = uninitializedArray!(ubyte[])(1024);
foreach (chunk; f.byChunk(buffer))
{
foreach (ch; chunk)
if (ch == '\n')
++c;
}
writeln(c);
return 0;
}
And I belive it could be faster when iopipe is used
Dne 30.5.2017 v 22:02 Nitram via Digitalmars-d-learn napsal(a):
After reading
https://dlang.org/blog/2017/05/24/faster-command-line-tools-in-d/ , i
was wondering how fast one can do a simple "wc -l" in D.
So i made a couple short implementations and found myself confronted
with slow results compared to "/usr/bin/wc -l".
How would a implementation look like in D, which is fast?
