v0.0.104

langext/array.go

@@ -1,6 +1,8 @@
 package langext
 
 import (
+	"errors"
+	"fmt"
 	"reflect"
 )
 
@@ -382,6 +384,40 @@ func ArrCastToAny[T1 any](arr []T1) []any {
 	return r
 }
 
+func ArrCastSafe[T1 any, T2 any](arr []T1) []T2 {
+	r := make([]T2, 0, len(arr))
+	for _, v := range arr {
+		if vcast, ok := any(v).(T2); ok {
+			r = append(r, vcast)
+		}
+	}
+	return r
+}
+
+func ArrCastErr[T1 any, T2 any](arr []T1) ([]T2, error) {
+	r := make([]T2, len(arr))
+	for i, v := range arr {
+		if vcast, ok := any(v).(T2); ok {
+			r[i] = vcast
+		} else {
+			return nil, errors.New(fmt.Sprintf("Cannot cast element %d of type %T to type %s", i, v, *new(T2)))
+		}
+	}
+	return r, nil
+}
+
+func ArrCastPanic[T1 any, T2 any](arr []T1) []T2 {
+	r := make([]T2, len(arr))
+	for i, v := range arr {
+		if vcast, ok := any(v).(T2); ok {
+			r[i] = vcast
+		} else {
+			panic(fmt.Sprintf("Cannot cast element %d of type %T to type %s", i, v, *new(T2)))
+		}
+	}
+	return r
+}
+
 func ArrConcat[T any](arr ...[]T) []T {
 	c := 0
 	for _, v := range arr {