Re: Check for next array element.

If you keep a counter variable, you can check to see if it's the last element. For example:

my $count = 1;
my $size = @list;
foreach( @list ) { 
    # DO STUFF
    $data->{IS_LAST} = $count == $size ? 1 : 0;
    $count++;
}
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Comment on Re: Check for next array element. Download Code

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Re^2: Check for next array element. by rashley (Scribe) on Nov 18, 2005 at 15:52 UTC
Thanks, that's what i was looking for. I know this was easy, but I'm not familiar with the `$data->{IS_LAST} = $count == $size ? 1 : 0;` [download] syntax.	[reply] [d/l]
Re^3: Check for next array element. by friedo (Prior) on Nov 18, 2005 at 16:26 UTC
That is the ternary conditional operator, which is short for if/then/else. I like to use it for assigning a conditional value. If the condition `$count == $size` is true, then 1 is returned, otherwise 0.	[reply] [d/l]
Re^2: Check for next array element. by BaldPenguin (Friar) on Nov 18, 2005 at 18:47 UTC
Couldn't that also be written as `$data->{'IS_LAST'} = 0; for ( my $i = 0; $i < @list; $i++ ) { # DO STUFF $data->{'IS_LAST'} = 1 if $i == $#list; }` [download] Don WHITEPAGES.COM \| INC Everything I've learned in life can be summed up in a small perl script!	[reply] [d/l]
Re^3: Check for next array element. by Aristotle (Chancellor) on Nov 18, 2005 at 19:18 UTC
Too easy to make off-by-one mistakes that way. Use `for my $i ( 0 .. $#list ) { ... }` instead, unless you have speficic reason to use `for(;;)`. (I have never had such an occasion, but maybe you will.) Makeshifts last the longest.	[reply] [d/l] [select]
Re^3: Check for next array element. by friedo (Prior) on Nov 18, 2005 at 18:50 UTC
Sure, but then in the "DO STUFF" section you have to work with `$list[$i]` instead of `$_`. What are we, animals?! `:-)`	[reply] [d/l] [select]