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code/base-project/base-go-v2/internal/utils/mapx/index.go

@@ -13,8 +13,12 @@ func New() M {
 	return M{}
 }
 
-func NewArr() {
-	//return make([]M, 0, len())
+func NewArr(cap ...int) []M {
+	c := 0
+	if len(cap) > 0 {
+		c = cap[0]
+	}
+	return make([]M, 0, c)
 }
 
 // Set 设置单个键值，支持链式调用