Re: Perl array delete


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Re: Perl array delete

by wind (Priest)

on Apr 06, 2011 at 05:53 UTC ( [id://897665]=note: print w/replies, xml )

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in reply to Perl array delete

delete ~~works on~~ is intended for a hash, not an array.

If you just want to filter out certain elements of an array, use grep or splice:

my $file = "test_html";
my @file_lkp = ("file1", "file2");

@file_lkp = grep {$_ ne $file} @file_lkp;
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Re^2: Perl array delete
by BrowserUk (Patriarch) on Apr 06, 2011 at 07:11 UTC

delete works on a hash, not an array.

Hm. It does 'work' on an array on both 5.8.9 and 5.10.1:

C:\test>\perl32\bin\perl -Mstrict -we"my @a = 1..10; delete $a[5]; pri
+nt qq[@a]"
Use of uninitialized value in join or string at -e line 1.
1 2 3 4 5  7 8 9 10

C:\test>\perl64\bin\perl -Mstrict -we"my @a = 1..10; delete $a[5]; pri
+nt qq[@a]"
Use of uninitialized value in join or string at -e line 1.
1 2 3 4 5  7 8 9 10
[download]

It doesn't really do what you'd hope it would do in as much as it leaves behind an undef in place of the deleted element, but there are no warnings or deprecations.

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