Gossamer Forum: General: Perl Programming: trimming an array

Sep 13, 2003, 11:28 AM

golden_water

Novice (48 posts)

Sep 13, 2003, 11:28 AM

Post #1 of 4

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trimming an array

I got an array with some empty elements inside..

@a = ("a","b","","","c","","");

how to change it to

@a=("a","b","c");

thanks

Sep 13, 2003, 12:23 PM

Andy

Veteran / Moderator (18441 posts)

Sep 13, 2003, 12:23 PM

Post #2 of 4

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Re: [golden_water] trimming an array In reply to

Long winded way...

Code:
my @a = ("a","b","","","c","",""); 
my @b; 

foreach (@a) { 
    if ($_) { push(@b,$_); } 
} 

@a = @b;

Not sure if thereis a better/faster way.. but thats probably how I would do it (gotta admit, I've never had to do it before).

Cheers

Andy (mod)
andy@ultranerds.co.uk

Sep 13, 2003, 12:50 PM

Mark Badolato

Veteran (1509 posts)

Sep 13, 2003, 12:50 PM

Post #3 of 4

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Re: [golden_water] trimming an array In reply to

There's a few ways. One pretty simple one:

@a = grep {/./} @a;

--mark

Sep 13, 2003, 10:16 PM

golden_water

Novice (48 posts)

Sep 13, 2003, 10:16 PM

Post #4 of 4

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Re: [Mark Badolato] trimming an array In reply to

very simple question needs a simple answer..

thank you and this is what I need.........