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Re: Name "main::a" used only once: possible typo

by kcott (Chancellor)
on Mar 08, 2013 at 08:07 UTC ( #1022351=note: print w/replies, xml ) Need Help??

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  1. or download this
    $ perl -Mstrict -Mwarnings -E '
    use List::Util qw/reduce/;
    ...
    Name "main::a" used only once: possible typo at -e line 3.
    Name "main::b" used only once: possible typo at -e line 3.
    720
    
  2. or download this
    $ perl -Mstrict -Mwarnings -E '
    use List::Util qw/reduce/; $a || $b || 1;
    say reduce { $a * $b } 1..6;
    '
    720
    
  3. or download this
    $ perl -Mstrict -Mwarnings -E '
    use List::Util qw/reduce sum/; $a || $b || 1;
    ...
    '
    720
    21
    

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[nysus]: What happened to the submit button? All I have is a preview button.
[erix]: perlmonks has become read-only ?
[marto]: erix unlikely, we've had posts within the last few minutes ;)
[ambrus]: nysus: make sure you enter at least two lines for the title and then preview, and read warnings the preview form prints
[davies]: There is an option (I have it set) to force preview before submission. Perhaps your option has been set (accidentally?) and you are not expecting it.
[ambrus]: sorry, I mean at least two words for the title and then preview
[ambrus]: davies: that option is the default. and it's not really "force", it just hides the button.
[marto]: yes, not reading the errors displayed has been a cause of this type of report in the past
[nysus]: Ambrus, ah. I think that was the problem. I'll try. Thanks!

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