Strain

Ringkasan Tantangan

Implement the `keep` and `discard` operation on collections.

Visit the strain exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

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The following are the top 3 community solutions by stars:

Solution 1 by @TechnoTone (⭐ 0) — View on Exercism
Solution 2 by @vdmasek (⭐ 0) — View on Exercism
Solution 3 by @amscotti (⭐ 0) — View on Exercism

Source: Exercism elm/strain

💡 Lihat Solusi

module Strain exposing (discard, keep)


keep : (a -> Bool) -> List a -> List a
keep predicate list =
    case list of
        [] ->
            []

        x :: xs ->