From 377dcd20aa5b183eb5f66245cb8c72a7e625dff0 Mon Sep 17 00:00:00 2001
From: E Jikan <e@vstream-corp.com>
Date: Thu, 7 Apr 2022 17:20:55 -0700
Subject: feat(list): Add `prepend` to list module

While this can also be done via the built-in syntax it's nice to have
a complete standard library including this function.
---
 src/gleam/list.gleam | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/gleam/list.gleam b/src/gleam/list.gleam
index 9acc6ce..c74bd20 100644
--- a/src/gleam/list.gleam
+++ b/src/gleam/list.gleam
@@ -488,6 +488,15 @@ if javascript {
   }
 }
 
+/// Prefixes an item to a list. This can also be done using the dedicated
+/// syntax instead
+///
+///    let new_list = [1, ..existing_list]
+///
+pub fn prepend(to list: List(a), item: a) -> List(a) {
+  [item, ..list]
+}
+
 fn do_flatten(lists: List(List(a)), acc: List(a)) -> List(a) {
   case lists {
     [] -> acc
-- 
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