This works fine and deletes any element equal to 5 while iterating over the loop. You are using this so you can infer that the unless($uid) conditional is always executed (meaning you never get a true value in $uid) thus you splice your array down to nothing. Add a print $uid debugging statement an I reckon you will find this is the case. 

$" = "~";

@ary = qw( 5 1 2 3 4 5 6 7 8 9 5 );

print "@ary\n";

for my $i ( 0 .. $#ary ) {
    splice @ary, $i, 1 if $ary[$i] == 5;
}

print "@ary\n";

Update - Senator Retracts earlier statement

Hmm as pointed out by the ever vigilant MeowChow this does not work in some cases although it does on the test given. This will work. Proviso you will lose all undefined elements in your array. 

@ary = qw( 0 1 5 5 5 0 5 5 5 1 0 );

$" = "~";

print "@ary\n";

for my $i ( 0 .. $#ary ) {
    # undefine bad element
    undef $ary[$i] if $ary[$i] == 5;
}

# now remove undefined elements
@ary = grep{ defined }@ary;

print "@ary\n";

[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: How do I remove an element from any array while iterating over it in a loop? by tachyon
in thread How do I remove an element from any array while iterating over it in a loop? by Anonymous Monk

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