How does one defer string substitution? Given the following code:
#!/usr/bin/perl
my $s0 = "red apple";
my $s1 = $s0;
print "s0 = $s0\n";
my $k = 0;
my $pattern = qr/(.)ed/;
$s0 =~ s/$pattern/++$k && "$1osy"/ge;
print "$k change(s)\n";
print "s0 = $s0\n";
$k = 0;
$pattern = qr/r(.)(.)/;
my $replace = '$2ead';
$s1 =~ s/$pattern/++$k && $replace/ge;
print "$k change(s)\n";
print "s1 = $s1\n";
How do I get
$2 to be replaced correctly given that
$replace is defined previous to the substitution? I was unsuccessful when using
eval.
Ultimately, the value of
$replace will be very long and complicated...
Thanks.
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