From 0592add8ca146edb577bff06eb483fc080ea5e7d Mon Sep 17 00:00:00 2001
From: milarin <milaring@proton.me>
Date: Sat, 25 Mar 2023 08:52:08 +0100
Subject: [PATCH] MapError implemented

---
 map.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/map.go b/map.go
index a364ec1..e99d1de 100644
--- a/map.go
+++ b/map.go
@@ -7,3 +7,15 @@ func Map[I, O any](slice []I, mapper func(I) O) []O {
 	}
 	return ret
 }
+
+func MapError[I, O any](slice []I, mapper func(I) (O, error)) ([]O, error) {
+	ret := make([]O, 0, len(slice))
+	for _, old := range slice {
+		new, err := mapper(old)
+		if err != nil {
+			return nil, err
+		}
+		ret = append(ret, new)
+	}
+	return ret, nil
+}