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"be consistent"

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( #3333=superdoc: print w/replies, xml ) Need Help??

Sorry for the delay in getting back to you. I've adapted your technique somewhat:

sub eily{ my $str = shift; my @b = map[ ( 1e99, 0 ) x 2 ], 1 .. 256; for my $y ( 0 .. $HEIGHT-1 ) { my $s = \substr( $$str, $y * $WIDTH, $WIDTH ); my $t = ' ' . $$s ^ $$s; chop $t; while( $t =~ m[[^\0]\0*]g ) { my $c = ord substr $$s, $-[0], 1; #, $-[0], $+[0]; $b[ $c ][ LEFT ] = $-[0] if $-[0] < $b[ $c ][ LEFT + ]; $b[ $c ][ RIGHT ] = $+[0]-1 if $+[0]-1 > $b[ $c ][ RIGH +T ]; $b[ $c ][ TOP ] = $y if $y < $b[ $c ][ TOP + ]; $b[ $c ][ BOTTOM ] = $y if $y > $b[ $c ][ BOTT +OM ]; } } return \@b; }

and the results are impressive:

C:\test>\perl22\bin\perl -WIDTH=10000 -HEIGHT=10000 yr() took 12.478694 buk3() took 8.195635 dave() took 1.876719 eily took 0.888511 C:\test>\perl22\bin\perl -WIDTH=20000 -HEIGHT=20000 yr() took 18.774189 buk3() took 32.063918 dave() took 5.701784 eily took 2.409520

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". The enemy of (IT) success is complexity.
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^4: Faster regex to split a string into runs of similar characters? by BrowserUk
in thread Faster regex to split a string into runs of similar characters? by BrowserUk

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