Perl ABC

1. Perl
›
2. Character code
›
3. Unicode
›
4. code point

How to find the code point of a character's Unicode

If you want to know the Unicode code point of a character, do the following: The utf8 pragma must be enabled and the source code must be saved in UTF-8.

use utf8;

my $str = 'Ah';

# Displayed as hexadecimal
printf "%x\n", ord($str);

You can know the code point of the character with the ord function. The printf function specifies the format %x and displays it in hexadecimal.

The output result is as follows, and you can see that the code point of the character "A" is 3042.

3042

Easily check with Data::Dumper

There is also a simple way to find out using the Data::Dumper module. This is because Data::Dumper converts any character that is not in the ASCII range to a code point when outputting the decoded string.

use utf8;

my $str = 'Ah';

use Data::Dumper;
print Dumper $str;

Unicode code points are output in hexadecimal as shown below.

$VAR1 = "\x{3042}";