From 3f4f12e64e623b4076230dd0433e76d1f255ad1b Mon Sep 17 00:00:00 2001
From: Oliver Gugger <gugger@gmail.com>
Date: Thu, 11 Jan 2024 13:38:51 +0100
Subject: [PATCH] fn: add Keys and Values helper functions for map access

---
 fn/func.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/fn/func.go b/fn/func.go
index 5f0fc3c7b..4c97242db 100644
--- a/fn/func.go
+++ b/fn/func.go
@@ -30,6 +30,27 @@ func Map[I, O any, S []I](s S, f func(I) O) []O {
 	return output
 }
 
+// Keys returns a slice containing all the keys of the given map.
+func Keys[T any, K comparable](s map[K]T) []K {
+	output := make([]K, 0, len(s))
+	for key := range s {
+		key := key
+		output = append(output, key)
+	}
+
+	return output
+}
+
+// Values returns a slice containing all the values of the given map.
+func Values[T any, K comparable](s map[K]T) []T {
+	output := make([]T, 0, len(s))
+	for key := range s {
+		output = append(output, s[key])
+	}
+
+	return output
+}
+
 // Filter applies the given predicate function to each element of the given
 // slice and generates a new slice containing only the elements for which the
 // predicate returned true.