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| -rw-r--r-- | src/gleam/string_builder.gleam | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gleam/string_builder.gleam b/src/gleam/string_builder.gleam index 616da74..4db332c 100644 --- a/src/gleam/string_builder.gleam +++ b/src/gleam/string_builder.gleam @@ -1,3 +1,5 @@ +import gleam/list + /// `StringBuilder` is a type used for efficiently building strings. /// /// When we append one string to another the strings must be copied to a @@ -161,6 +163,12 @@ if javascript { "../gleam_stdlib.mjs" "length" } +pub fn join(builders: List(StringBuilder), with sep: String) -> StringBuilder { + builders + |> list.intersperse(from_string(sep)) + |> concat +} + /// Converts a builder to a new builder where the contents have been /// lowercased. /// |