Hi,
flotsan <[EMAIL PROTECTED]> asked:
> I am reading the Perl Camel book - Programming Perl 3rd Ed
> and having a bit of trouble to understand some of the ideas
> presented in section 2.11.2.
> Specifically it is told the following two statements are different:
>
> 1) if ($_ = <STDIN>) { print; } # suboptimal:
> doesn't test
> defined
> 2) if (defined($_ = <STDIN>)) { print; } # best
>
> But as I see it, these two do the same thing in that in the
Just run these two snippets and input "0" and you'll see the
difference - snippet 1 will not print a zero because like an
undefined value, it evaluates to false in boolean context.
HTH,
Thomas
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