Course of Raku / Functional, concurrent, reactive, and web programming / Concurrent programming / Threads / Exercises / Join and wait

Solution: Join and wait

Here is a possible solution to the task.

Code

my $t = Thread.start({ say 'first' });
$t.finish;
say 'second';

🦋 You can find the source code in the file join-and-wait.raku.

Output

first
second

Comments

1. .finish blocks until the thread has printed first.

2. Only then does the main program continue and print second, so the order is guaranteed. Without .finish, the two lines could appear in either order.

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