On Oct 13, Dave Adams said:

my $text= 'hello';
my $text2 = 'bye';
my $text3 =~ s/$text/$text2/g;
print $text3;

What are you expecting to happen? There is NOTHING in $text3, so trying to substitute all "hello"s for "bye"s will result in Perl telling you that you're using an uninitialized value ($text3).

Perhaps if you put something in $text3 FIRST, and THEN tried s///'ing it.

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