Hello Monks,

This might be a very foolish thing to ask, but how can I add/append value of $string2 at the end of $string1 and store the resulting string in $string1? I will not know the length of both the strings and might have to repeat this step unknown number of times depending on some conditions. I can use . operator to do it like:

#!/usr/bin/perl
use strict;
use warnings;

my $string1 = "Hello";
my $string2 = " World";
$string1 .= $string2;
print "$string1\n";
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Which prints "Hello World". But can I do the same using substr function?

I tried same with the code like below, but couldn't figure out a way to insert after the last character of string1. using 0 instead of -1 inserts string2 at the beginning of string1 and -0 does the same.

#!/usr/bin/perl
use strict;
use warnings;

my $string1 = "Hello";
my $string2 = " World";
substr($string1,-1,0,"$string2");
print "$string1\n";
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Output of above is: Hell Worldo

Output of same above code when 0 is replaced with 5: Hell World

Thanks in advance!

Note: I am just curious to find out if this can be done using substr but otherwise I am able to get the work done using . operator