in reply to Numification of strings

When you ask for the numeric value of something that isn't a number, it does the best it can and gives a warning.

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Re^2: Numification of strings
by LanX (Saint) on Aug 02, 2010 at 11:43 UTC
    ... and gives a warning.

    ah, thank you!

    I missed there are warnings while testing in the debugger¹!

    However this gives me the possibility to change $SIG{__WARN__} to deal with this kind of errors...e.g. by dieing.

    Cheers Rolf

    1)... hmm but why?

    UPDATE:

    OK starting the debugger with -w switch helps. 

    :~$ perl -w -de0
...
  DB<1>  $x="6gg"
 
  DB<2> p -$x
Argument "6gg" isn't numeric in negation (-) at (eval 6)[/usr/share/pe
+rl/5.10/perl5db.pl:638] line 2.
...

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