What is the proper way to check if a string is empty in Perl?

Question

I\'ve just been using this code to check if a string is empty:

if ($str == \"\")
{
  // ...
}

And also the same with the not equals operato

Answer 1

You probably want to use "eq" instead of "==". If you worry about some edge cases you may also want to check for undefined:

if (not defined $str) {

# this variable is undefined

}