in reply to Compare file content with a variable content

In 
if ($modified = $string) { print "the file is the same";

[download]
you're assigning $string to $modified. To test wether they're equal, use the eq operator: 
if ($modified eq $string) {
    print "the file is the same\n";
}

[download]
If you were to compare numbers, you'd use ==.


Update: The answer to your question is yes, even it's just one character, the two strings will mismatch.

[ ar0n ]

Replies are listed 'Best First'.
Re: (ar0n: use 'eq') Re: Compare file content with a variable content
by Skyhawlk (Initiate) on May 20, 2001 at 11:02 UTC
    I have tried both approches (either use 'eq' or just insert the scalar value of the string (array) into both vars and use '==' to compare between them, but the function always returns the "the file is not the same" printout no matter if both strings 'looks' the same. Could it be that there is a space character or CR somewhere in that file that causes to the mismatch?
[reply]
      The string value was in fact surrounded by space characters so it was NOT the same as the other string. I have added some trimming: 
      for ($modified_scalar) {
        s/^\s+//;
        s/\s+$//;
    }

      [download]
      and it did the trick!
[reply]
[d/l]

In Section Seekers of Perl Wisdom