feat(Go-Tool)：2020/12/14:添加validator.v8源码解析和使用示例

vendor/github.com/ahmetb/go-linq/groupby.go

@@ -6,11 +6,14 @@ type Group struct {
 	Group []interface{}
 }
 
-// GroupBy method groups the elements of a collection according to a specified
-// key selector function and projects the elements for each group by using a
-// specified function.
-func (q Query) GroupBy(keySelector func(interface{}) interface{},
-	elementSelector func(interface{}) interface{}) Query {
+// GroupBy method groups the elements of a collection according
+// to a specified key selector function and projects the elements for each group
+// by using a specified function.
+func (q Query) GroupBy(
+	keySelector func(interface{}) interface{},
+	elementSelector func(interface{}) interface{},
+) Query {
+
 	return Query{
 		func() Iterator {
 			next := q.Iterate()
@@ -43,39 +46,3 @@ func (q Query) GroupBy(keySelector func(interface{}) interface{},
 		},
 	}
 }
-
-// GroupByT is the typed version of GroupBy.
-//
-//   - keySelectorFn is of type "func(TSource) TKey"
-//   - elementSelectorFn is of type "func(TSource) TElement"
-//
-// NOTE: GroupBy has better performance than GroupByT.
-func (q Query) GroupByT(keySelectorFn interface{},
-	elementSelectorFn interface{}) Query {
-	keySelectorGenericFunc, err := newGenericFunc(
-		"GroupByT", "keySelectorFn", keySelectorFn,
-		simpleParamValidator(newElemTypeSlice(new(genericType)), newElemTypeSlice(new(genericType))),
-	)
-	if err != nil {
-		panic(err)
-	}
-
-	keySelectorFunc := func(item interface{}) interface{} {
-		return keySelectorGenericFunc.Call(item)
-	}
-
-	elementSelectorGenericFunc, err := newGenericFunc(
-		"GroupByT", "elementSelectorFn", elementSelectorFn,
-		simpleParamValidator(newElemTypeSlice(new(genericType)), newElemTypeSlice(new(genericType))),
-	)
-	if err != nil {
-		panic(err)
-	}
-
-	elementSelectorFunc := func(item interface{}) interface{} {
-		return elementSelectorGenericFunc.Call(item)
-
-	}
-
-	return q.GroupBy(keySelectorFunc, elementSelectorFunc)
-}