Course of Raku / Advanced / Subroutines / The Whatever star 🆕 / Exercises

An open-ended range

Problem

On its own, * means “no limit”. Use it as the endpoint of a sequence: write the even numbers as the open-ended sequence 2, 4 ... *, then take the first four of them with head. Because the sequence is unbounded, only laziness makes this safe.

Example

The program prints:

(2 4 6 8)

Solution

✅ See the solution

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