> how do I capture this warning and make my code do something different if it isn't numeric?

One approach is to locally change the SIG handler 

 
my $result;
{
    my $flag;
    local $SIG{__WARN__} = sub {
        # catch error in @_, set $flag
    };
    $result = int($x);
    something_different($x,$result) if $flag;
}

[download]

See Perl's Warn and Die Signals for a general discussion.

HTH! :)

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

In reply to Re: How to capture the "isn't numeric" warning? by LanX
in thread How to capture the "isn't numeric" warning? by harangzsolt33

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