RE: RE (tilly) 1: remove duplicate lines from input file

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RE: RE: RE (tilly) 1: remove duplicate lines from input file by japhy (Canon) on Sep 23, 2000 at 07:55 UTC
Or even (golf alert): `perl -ne '${$_}\|\|=print' file` (although it's not strict compliant, and breaks if strings have NULLs in them). `$_="goto+F.print+chop;\n=yhpaj";F1:eval`	[reply]
RE (tilly) 3: remove duplicate lines from input file by tilly (Archbishop) on Sep 23, 2000 at 11:27 UTC
If you follow the thread I linked you would find discussion of essentially that alternative. Using ++$seen{$_} was noticably faster because you avoid unnecessary scalar creation.	[reply]