Re: how to clear an array

@tmp = () makes @tmp an array with zero elements. undef @tmp undefines @tmp. Check the output from:

my @foo = qw(foo bar baz);
@foo = ();
print "\@foo is defined.\n" if defined @foo;

my @bar = qw(foo bar baz);
undef @bar;
print "\@bar is defined.\n" if defined @bar;
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Owl looked at him, and wondered whether to push him off the tree; but, feeling that he could always do it afterwards, he tried once more to find out what they were talking about.

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Re^2: how to clear an array by Anonymous Monk on Feb 25, 2006 at 13:41 UTC
That may work fine on Perl4 but: `perldoc -f defined [snip] Use of "defined" on aggregates (hashes and arrays) is deprecated +.` [download] So don't do that. :-)	[reply] [d/l]
Re^3: how to clear an array by HollyKing (Pilgrim) on Feb 25, 2006 at 18:27 UTC
I wouldn't use something like that in production code, but it's good to know that there's a reason beyond my personality flaws. ;) Owl looked at him, and wondered whether to push him off the tree; but, feeling that he could always do it afterwards, he tried once more to find out what they were talking about.	[reply]