Re: removing a hash from an array of hashes

The tricky thing about using splice and a for loop is that you are altering the length of the array within the loop, so you need to perform a little hackery:

use strict;
use warnings;
use Data::Dumper;

my @successarray;

for my $value (182,1000,201,300,124,1000,201,300,124) {
    push @successarray, {ydayopen => $value}
}

my $fromopenmove = 200;

for (my $i = 0;$i < @successarray;$i++)
{    
     if ($successarray[$i]->{'ydayopen'} > $fromopenmove)
     {
         splice(@successarray,$i,1);
         $i--;    # This is the part that you might not think of
     }
}


print Dumper(\@successarray);
[download]

Comment on Re: removing a hash from an array of hashes Download Code

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Re^2: removing a hash from an array of hashes by BrowserUk (Patriarch) on Dec 13, 2010 at 16:48 UTC
Another way to do that safely is to process the array backward: `@x = 1..10;; for my $i ( reverse 0 .. $#x ){ $x[ $i ] & 1 and splice @x, $i, 1; };; print @x;; 2 4 6 8 10` [download] Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]
Re^2: removing a hash from an array of hashes by Conal (Beadle) on Dec 13, 2010 at 17:01 UTC
yeah. It was the decrement of the $i index count that i had overlooked in my experiments with splice thanks for taking the time to help me along. conal.	[reply]