From f310627585fa8bec37bee7b3ac5e783d0cfbc77a Mon Sep 17 00:00:00 2001
From: Louis Pilfold <louis@lpil.uk>
Date: Mon, 25 May 2020 10:44:01 +0100
Subject: set.delete!

---
 src/gleam/set.gleam | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src')

diff --git a/src/gleam/set.gleam b/src/gleam/set.gleam
index cd7cbe0..7b52064 100644
--- a/src/gleam/set.gleam
+++ b/src/gleam/set.gleam
@@ -61,3 +61,15 @@ pub fn contains(in set: Set(element), this member: element) -> Bool {
   |> map.get(member)
   |> result.is_ok
 }
+
+/// Remove an element from a set. If the set does not contain the element then
+/// the set is returned unchanged.
+///
+/// ## Examples
+///
+///    > new() |> insert(2) |> delete(2) |> contains(1)
+///    False
+///
+pub fn delete(from set: Set(element), this member: element) -> Set(element) {
+  Set(map: map.delete(set.map, member))
+}
-- 
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