Text editing [Was: Re: #line decoder]

[Sergey Gromov]

In article <gbg0uf$uka$1 at digitalmars.com>, bearophileHUGS at lycos.com 
says...
> // loader3
> import std.stream;
> import std.string: split;
> void main() {
>     auto fin = new BufferedFile("data2.txt");
>     string[] first = fin.readLine().split();
>     auto cols = new string[first.length];
>     foreach (col, el; first)
>         cols[col] ~= el.dup;
>     foreach (string line; fin)
>         foreach (col, el; line.split())
>             cols[col] ~= el.dup;
> }

Specifically in this line:

>     auto cols = new string[first.length];

you probably actually want "new string[][first.length]", otherwise you 
simply get three huge strings.

My timing of your original sample is 9.8s (best out of 5 runs).  The 
fixed sample timing is 48.9s.