"flotsan" schreef:
> 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
perl -le '
print defined($_) ? "\"$_\"" : "<undefined>"
, "\tis "
, $_ ? "true" : "false"
for undef, "", 0, "0", 0E0, "0E0", 0.0, "0.0", 1
'
--
Affijn, Ruud
"Gewoon is een tijger."
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
