next unless - doesnt work?

sweepy838 has asked for the wisdom of the Perl Monks concerning the following question:

So i have:

next unless ( grep( /$name/, @names ));
print "$name isnt in the array so continue";
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it prints nothing, even though the name is there. however, this works:

if ( grep( /$name/, @names )) {
   print "name is in the array";
}
#but this doesnt suit my needs.
[download]

thx for help :)

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Re: next unless - doesnt work? by brx (Pilgrim) on Apr 28, 2012 at 15:01 UTC
Show us the complete loop. "If LABEL is omitted, the command refers to the innermost enclosing loop" (next) update: better to do `grep {$name eq $_} @names`	[reply] [d/l]
Re^2: next unless - doesnt work? by sweepy838 (Acolyte) on Apr 28, 2012 at 15:16 UTC
ah i solved the problem using ne instead of eq :) and for some reason != didnt do the job but ne did.. strange?	[reply]
Re^3: next unless - doesnt work? by stevieb (Canon) on Apr 28, 2012 at 15:35 UTC
Not strange ;) != and == are for numeric context comparisons where eq/ne are for evaluating strings. Your original post didn't show any code relating to evaluations, so I, nor anyone else have any idea how this was part of your problem in the first place.	[reply]
Re^4: next unless - doesnt work? by jeanluca (Deacon) on Apr 28, 2012 at 16:18 UTC
Re^5: next unless - doesnt work? by thomas895 (Deacon) on Apr 28, 2012 at 20:49 UTC
Re^5: next unless - doesnt work? by eyepopslikeamosquito (Archbishop) on Apr 28, 2012 at 22:10 UTC
Re^5: next unless - doesnt work? by ikegami (Patriarch) on Apr 30, 2012 at 19:35 UTC
Re^3: next unless - doesnt work? by Anonymous Monk on Apr 28, 2012 at 15:36 UTC
and for some reason != didnt do the job but ne did.. strange? Not at all. One is for numbers, the other for strings. You would've gotten a warning if you had `use warnings` on.	[reply] [d/l]
Re^3: next unless - doesnt work? by brx (Pilgrim) on Apr 28, 2012 at 15:42 UTC
String vs numerical	[reply]
Re^4: next unless - doesnt work? by sweepy838 (Acolyte) on Apr 28, 2012 at 16:17 UTC
Re^3: next unless - doesnt work? by ww (Archbishop) on Apr 28, 2012 at 17:13 UTC
Not at all strange: ne is used for alphas; != for numbers.	[reply]

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