论坛 › Perl › perl true/false

色粉盒撒娇 发表于 2015-12-27 15:41:56

perl true/false

　　perl treat 0 false, non 0 ture.



print "false\n" if 0;
print "false\n" if 0;
------------------------
ture
　　perl treat string empty is false.



my $temp = "";
print "This is $temp\n" if $temp;
$temp = "HelloWorld";
print "This is $temp\n" if $temp;
--------------------------------------------
This is HelloWorld
　　

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