Hi,
There is something that's bothering me for so long
regarding the use of $_ variable.
for example:
here is my string:
$_ = "but";
s/u/a/g;
print $_;
This will simply print "bat"
My problem is using a variable in place of $_.
how will I tell that the one i'm going to substitute
is the $string;
Ex:
my $string = "but";
s/u/a/g;
print $string;
and I get this error when i run it.
Use of uninitialized value in substitution (s///) at
substitute line 6.
I don't have any trouble with regex matching using $_
or any varible because I can always say:
if $variable =~/\d/ instead of:
if(/\d/) which is equivalent to $_=~/\d/;
I don't know how to do it with substitutions.
any idea?
thanks
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