Creating implementation for idiom 287 : Number of bytes of a string

Idiom

# 287 Number of bytes of a string

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Assign to n the number of bytes in the string s.

This can be different from the number of characters. If n includes more bytes than the characters per se (trailing zero, length field, etc.) then explain it. One byte is 8 bits.

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import 'dart:convert';

var n = utf8.encode(s).length;

use v5.10;
use charnames qw( :full );
use Encode;

my $text = "\N{LATIN SMALL LETTER E WITH ACUTE}";
say length $text;  # prints 1

my $utf8 = Encode::encode('UTF-8', $text);
say length $utf8;  # prints 2

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