Course of Raku / Advanced / Control flow / Phasers / Exercises / Final message

Solution: Final message

Here is a possible solution to the task.

Code

my $count = 0;

END say "processed $count items";

$count++ for 1..3;

🦋 You can find the source code in the file final-message.raku.

Output

processed 3 items

Comments

The END phaser is written before the loop, but it runs last — after the main code has finished. By then $count has been incremented three times.
Because the phaser closes over $count, it reads the variable’s final value, not the 0 it held when the phaser appeared in the source. This is the usual reason to put a summary in END.

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