Re: problem with byLine

[simendsjo]

On Mon, 14 May 2012 10:41:54 +0200, Christian Köstlin  
<christian.koest...@gmail.com> wrote:

Hi,
i wanted to output an ascii-file line by line, but reversed.
the idea was to open the file, use byLine to read it line-by-line, make  
this range an array, and retro this array.

But when i convert byLine to an array, the result is already trash.

Please see this snippet.

import std.stdio;
import std.array;

int main(string[] args) {
   if (args.length != 2) {
     throw new Exception("Usage: " ~ args[0] ~ " file1");
   }

   auto f = File(args[1], "r");
   auto i = array(f.byLine());
   foreach (l; i) {
     writeln(l);
   }
   return 0;
}

Any idea why this happens?

regards

christian köstlin

I believe byLine reuses the internal buffer. Try duping the lines:
  auto i = f.byLine().map!"a.idup"().array();