Add MapOmit, Context Parse/Serialize

struct.go

@@ -43,6 +43,23 @@ func StructHasProperty(value interface{}, name string) bool {
 	return has
 }
 
+func MapOmit[K comparable, V any](m map[K]V, keys ...K) map[K]V {
+	out := make(map[K]V, len(m))
+
+	omit := make(map[K]struct{}, len(keys))
+	for _, k := range keys {
+		omit[k] = struct{}{}
+	}
+
+	for k, v := range m {
+		if _, ok := omit[k]; !ok {
+			out[k] = v
+		}
+	}
+
+	return out
+}
+
 // MapMerge merges maps into one.
 func MapMerge[T ~map[string]any](maps...T) T {
 	out := make(T)