add map merge function (#22)

pluralsh · Mar 5, 2024 · 7efbdc5 · 7efbdc5
1 parent c914ce3
commit 7efbdc5
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/algorithms/map.go b/algorithms/map.go
@@ -0,0 +1,22 @@
+package algorithms
+
+func Merge(m1, m2 map[string]interface{}) map[string]interface{} {
+	// lifted from helm's merge code
+	out := make(map[string]interface{}, len(m1))
+	for k, v := range m1 {
+		out[k] = v
+	}
+
+	for k, v := range m2 {
+		if v, ok := v.(map[string]interface{}); ok {
+			if bv, ok := out[k]; ok {
+				if bv, ok := bv.(map[string]interface{}); ok {
+					out[k] = Merge(bv, v)
+					continue
+				}
+			}
+		}
+		out[k] = v
+	}
+	return out
+}