Multiple substitutions with a single regular expression in perl

Question

Say I have the following in perl:

my $string;
$string =~ s/ /\\\\ /g;
$string =~ s/\'/\\\\\'/g;
$string =~ s/`/\\\\`/g;

Can the above substitut

Answer 1

Separate substitutions may be much more efficient than a single complex one (e.g. when working with fixed substrings). In such cases you can make the code shorter, like this:

my $string;    
for ($string) {
    s/ /\\ /g;
    s/'/\\'/g;
    s/`/\\`/g;
}