I'm not sure if this is fastest but it is the shortest and sweetest way. It uses perl style code rather than C style.

Update

This is 150% faster than your C style method, see this 

use Data::Dumper;
while(<DATA>){
    push @matrix, [split/\s+/];
}
print Dumper(\@matrix);

__DATA__
1 2 3 4
5 6 7 8
9 10 11 12

[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: Fast Matrix Load by tachyon
in thread Fast Matrix Load by Evanovich

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