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Re^4: Generating Hash-of-List using map?

by LanX (Canon)
on Sep 24, 2013 at 10:19 UTC ( #1055464=note: print w/ replies, xml ) Need Help??

in reply to Re^3: Generating Hash-of-List using map?
in thread Generating Hash-of-List using map?

> So there is really no way around first declaring the hash and then filling it. What a pity!

O come on! Just "cheat"! ;-)

DB<113> @CELLS = ("A-1", "B-2", "C-3", "A-4", "B-5", "C-6", "A-7", " +B-8", "C-9") => ("A-1", "B-2", "C-3", "A-4", "B-5", "C-6", "A-7", "B-8", "C-9") DB<114> %hash = map { /^([^-]*)-(.*)$/; if( $1 eq ($a//'-') ) { push + @$b, $2; () } else { ( $a = $1 => $b = [ $2 ] ) } } sort @CELLS; => ("A", [1, 4, 7], "B", [2, 5, 8], "C", [3, 6, 9])

Cheers Rolf

( addicted to the Perl Programming Language)

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