Isogram

Challenge Overview

Determine if a word or phrase is an isogram.

Visit the isogram 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 @chuckwondo (⭐ 2) — View on Exercism
Solution 2 by @th3oth3rjak3 (⭐ 3) — View on Exercism
Solution 3 by @prevostc (⭐ 0) — View on Exercism

Source: Exercism gleam/isogram

💡 View Solution

pub fn is_isogram(phrase phrase: String) -> Bool {
  let letters =
    phrase
    |> string.replace("-", "")
    |> string.replace(" ", "")
    |> string.lowercase
    |> string.to_graphemes

  letters == list.unique(letters)
}