Course of Raku / Regexes and grammars / Regexes / Literals and character classes / Exercises
A letter or digit
Problem
A single character class can combine more than one range. Write a
class that matches one character that is either a lowercase letter
or a digit, and use it to find the first such character
in the string ' @x7' (which starts with spaces and an
@). Print the match.
Do not use a predefined class like \w — write the ranges
yourself.
Example
The program prints:
｢x｣