Re^3: sort by a multiple columns

I'm sorry, but neither you nor Roy Johnson follow the OP insofar as he would like undefined array elements to be treated like infinity rather than zero, that is, he says he wants

3,4,23,4,5
3,4,56,2,4
3,4
[download]

instead of

3,4
3,4,23,4,5
3,4,56,2,4
[download]

Might just have been a typo though, as it's quite unusual.
CombatSquirrel.

Entropy is the tendency of everything going to hell.

Comment on Re^3: sort by a multiple columns Select or Download Code

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Re^4: sort by a multiple columns by Roy Johnson (Monsignor) on Sep 08, 2004 at 23:20 UTC
Good observation. The fix is surprisingly simple: `sort { ## Compare through the shorter only for (0..(@$a>@$b ? $#{$b} : $#{$a})) { return $a->[$_] <=> $b->[$_] \|\| next } ## If no difference, the longer array is first @$b <=> @$a;` [download] Caution: Contents may have been coded under pressure.	[reply] [d/l]
Re^4: sort by a multiple columns by BrowserUk (Patriarch) on Sep 08, 2004 at 22:20 UTC
Don't be sorry, your absolutely right :) Especially as my attempted correction of Roy Johnson's code was crap anyway. Examine what is said, not who speaks. "Efficiency is intelligent laziness." -David Dunham "Think for yourself!" - Abigail "Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon	[reply]