Re^2: Useless use of private variable in void context


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Re^2: Useless use of private variable in void context

by AnomalousMonk (Archbishop)

on Jun 22, 2010 at 19:17 UTC ( [id://845947]=note: print w/replies, xml )

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in reply to Re: Useless use of private variable in void context
in thread Useless use of private variable in void context

But Khen1950fx's code has $tiu, $min && $tiu < $max as an if statement condition expression in two places. (I don't understand why this form is used in place of $tiu => $min && $tiu < $max of the OP code; am I missing something?)

Unless evaluation of $tiu has some side-effect (e.g., if it was a tied scalar – which it doesn't seem to be: as far as I can see, it's always a humble lexical), its evaluation is still useless and the 'useless use of ...' warning will still be generated.

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Re^3: Useless use of private variable in void context by SuicideJunkie (Vicar) on Jun 22, 2010 at 21:17 UTC
I think the confusion here is that the OP's `$tiu => $min && $tiu < $max` is equivalent to `$tiu, $min && $tiu < $max`. What was intended, on the other hand is almost certainly `$tiu >= $min && $tiu < $max` Key issue: `>=` is very different from `=>`. The former compares numerically. The latter is a fancy way to say comma.	[reply] [d/l] [select]

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