Course of Raku / Regexes and grammars / Regexes / Captures / Exercises / Last name first

Solution: Last name first

Here is a possible solution to the task.

Code

if 'Grace Hopper' ~~ / (\w+) ' ' (\w+) / {
    say "$1, $0";
}

🦋 You can find the source code in the file swap-words.raku.

Output

Hopper, Grace

Comments

1. The first and last names are captured into $0 and $1.

2. Inside a double-quoted string each capture interpolates as its matched text. Printing "$1, $0" puts the last name first, followed by a literal comma and space and then the first name.

Course navigation

← Last name first   |   Initial and surname →