How to convert a string to upper case?

Question

Perl

How to translate a string with spaces, numbers, dots, commas and other characters from lower case to upper case in Perl? uc($str) doesn't translate

Answer 1

To do this, you first need to figure out what encoding the source string is represented in. Where and how do we get it. If it is stupidly indicated in the text, then we look at the encoding of the script itself. If it is read from a file, then you need to look at what encoding the file is in and how we read it.

Answer 2

\U$str too?

Answer 3

And if so?
$str =~ tr/az/AZ/;

Answer 4

use utf8;
if it does not translate Cyrillic.