Re: Getting range from N..end with list slice

Just a note: take care with using grep { defined } that way, for it might have odd side effects:

$ perl -wE '@x = qw"a b c d e f g h"; say 0+@x; say join ":", grep { d
+efined } @x[4 .. 99]; say 0+@x;'
8
e:f:g:h
100
$
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Re^2: Getting range from N..end with list slice by ikegami (Patriarch) on Nov 27, 2010 at 21:38 UTC
It's very hard to twist what the OP has into something that's a problem, so I guess you're just providing trivia. In that case, let me add that any lvalue context will suffice. `>perl -E"@a[4..99] = (); say 0+@a;" 100 >perl -E"for (@a[4..99]) {} say 0+@a;" 100 >perl -E"sub {}->(@a[4..99]); say 0+@a;" 100 >perl -E"grep 1, @a[4..99]; say 0+@a;" 100` [download]	[reply] [d/l]