How can I convert a string to a number in Perl?

This is a simple solution:

Example 1

my $var1 = "123abc";
print $var1 + 0;

Result

Example 2

my $var2 = "abc123";
print $var2 + 0;

Result

You don't need to convert it at all:

% perl -e 'print "5.45" + 0.1;'
5.55

Related