Harry wrote:
>> @DirContent = grep { /^[0-9]/ } readdir(DIR);
>> if ($DirContent[0]){
J. Krahn replied:
> Again, you are doing boolean tests on the contents of array elements
> when you should really be testing the array itself. What if
> $DirContent[0] contained the file name "0"?
>
> if ( @DirContent ) {
OK, now I get it.
> But the test is superfluous because foreach will not loop over an empty
> array.
Now that seems just wrong ... Not that it won't loop but that it
doesn't warn or something.
#!/usr/local/bin/perl -w
use strict;
use warnings;
my @ar = ();
for(@ar){
print "$_\n";
}
But running that script just does nothing but gleefully print a
newline. Maybe there is some reason a programmer would want the above
behavior?
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