mirror of
https://github.com/duke-git/lancet.git
synced 2026-02-04 12:52:28 +08:00
feat: add Some and Every function in slice.go
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@@ -89,6 +89,50 @@ func Difference(slice1, slice2 interface{}) interface{} {
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return res.Interface()
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}
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// Every return true if all of the values in the slice pass the predicate function.
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// The function signature should be func(index int, value interface{}) bool .
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func Every(slice, function interface{}) bool {
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sv := sliceValue(slice)
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fn := functionValue(function)
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elemType := sv.Type().Elem()
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if checkSliceCallbackFuncSignature(fn, elemType, reflect.ValueOf(true).Type()) {
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panic("Filter function must be of type func(int, " + elemType.String() + ")" + reflect.ValueOf(true).Type().String())
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}
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var indexes []int
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for i := 0; i < sv.Len(); i++ {
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flag := fn.Call([]reflect.Value{reflect.ValueOf(i), sv.Index(i)})[0]
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if flag.Bool() {
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indexes = append(indexes, i)
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}
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}
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return len(indexes) == sv.Len()
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}
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// Some return true if any of the values in the list pass the predicate function.
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// The function signature should be func(index int, value interface{}) bool .
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func Some(slice, function interface{}) bool {
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sv := sliceValue(slice)
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fn := functionValue(function)
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elemType := sv.Type().Elem()
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if checkSliceCallbackFuncSignature(fn, elemType, reflect.ValueOf(true).Type()) {
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panic("Filter function must be of type func(int, " + elemType.String() + ")" + reflect.ValueOf(true).Type().String())
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}
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var indexes []int
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for i := 0; i < sv.Len(); i++ {
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flag := fn.Call([]reflect.Value{reflect.ValueOf(i), sv.Index(i)})[0]
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if flag.Bool() {
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indexes = append(indexes, i)
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}
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}
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return len(indexes) > 0
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}
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// Filter iterates over elements of slice, returning an slice of all elements `signature` returns truthy for.
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// The function signature should be func(index int, value interface{}) bool .
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func Filter(slice, function interface{}) interface{} {
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@@ -96,15 +96,39 @@ func TestConvertSlice(t *testing.T) {
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//}
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}
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func TestEvery(t *testing.T) {
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nums := []int{1, 2, 3, 5}
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isEven := func(i, num int) bool {
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return num%2 == 0
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}
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res := Every(nums, isEven)
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if res != false {
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utils.LogFailedTestInfo(t, "Every", nums, false, res)
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t.FailNow()
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}
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}
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func TestSome(t *testing.T) {
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nums := []int{1, 2, 3, 5}
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isEven := func(i, num int) bool {
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return num%2 == 0
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}
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res := Some(nums, isEven)
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if res != true {
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utils.LogFailedTestInfo(t, "Some", nums, true, res)
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t.FailNow()
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}
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}
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func TestFilter(t *testing.T) {
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s1 := []int{1, 2, 3, 4, 5}
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nums := []int{1, 2, 3, 4, 5}
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even := func(i, num int) bool {
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return num%2 == 0
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}
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e1 := []int{2, 4}
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r1 := Filter(s1, even)
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r1 := Filter(nums, even)
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if !reflect.DeepEqual(r1, e1) {
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utils.LogFailedTestInfo(t, "Filter", s1, e1, r1)
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utils.LogFailedTestInfo(t, "Filter", nums, e1, r1)
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t.FailNow()
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}
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