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| -rw-r--r-- | CHANGELOG.md | 3 | ||||
| -rw-r--r-- | src/gleam/string.gleam | 12 |
2 files changed, 9 insertions, 6 deletions
diff --git a/CHANGELOG.md b/CHANGELOG.md index 03c850f..c48880a 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -5,8 +5,7 @@ - The `bit_array` module gains the `compare` function. - The `float` modeule gains the `to_precision` function. - The `try_fold` function in the `iterator` module is now tail recursive. -- The performance of many functions in the `string` module on the JavaScript - target has been improved. +- The performance of many functions in the `string` module has been improved. ## v0.40.0 - 2024-08-19 diff --git a/src/gleam/string.gleam b/src/gleam/string.gleam index e530c8f..0906481 100644 --- a/src/gleam/string.gleam +++ b/src/gleam/string.gleam @@ -438,10 +438,14 @@ pub fn concat(strings: List(String)) -> String { /// ``` /// pub fn repeat(string: String, times times: Int) -> String { - iterator.repeat(string) - |> iterator.take(times) - |> iterator.to_list - |> concat + do_repeat(string, times, "") +} + +fn do_repeat(string: String, times: Int, acc: String) -> String { + case times <= 0 { + True -> acc + False -> do_repeat(string, times - 1, acc <> string) + } } /// Joins many `String`s together with a given separator. |