What is the difference between:
a. while(defined(my $line = <>)) ...
and
b. while(<>)
On Apr 6, 2007, at 7:52 AM, Rob Dixon wrote:
Why shift and unshift? Just use a for loop:
#!/usr/bin/perl
use strict;
use warnings;
while (defined (my $line = <>)) {
chomp $line;
my $record;
for my $field (split /\|/, $line) {
$field =~ s/\b(.)(.*?)\b/\u$1\L$2/g;
$record .= "$field|";
}
print "$record\n"
}
We don't even really need the for loop; it is just there if we
want to
avoid processing a field later. That means we can make a really
short
one liner:
perl -pe 's/\b(.)(.*?)\b/\u$1\L$2/g' file
s/(\S+)/\u\L$1/g;
Rob
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