1

array/array.go

@@ -0,0 +1,22 @@
+package array
+
+import "errors"
+
+type arrayT interface {
+	int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | string
+}
+
+func For[T arrayT](arr []T, f func(T, int) any) ([]T, error) {
+	var newArr []T
+	for i, a := range arr {
+		v := f(a, i)
+		switch v.(type) {
+		case T:
+			newArr = append(newArr, v.(T))
+		case bool:
+		default:
+			return nil, errors.New("func has a return type that is not allowed")
+		}
+	}
+	return newArr, nil
+}

array/array_test.go

@@ -0,0 +1,91 @@
+package array
+
+import (
+	"testing"
+)
+
+func TestArrayForInt(t *testing.T) {
+	arr := []int{1, 4, 5, 67, 89, 0, 346, 3}
+
+	new, err := For(arr, func(val int, index int) any {
+		if val > 10 {
+			return val
+		}
+		return false
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log(new)
+}
+
+func TestArrayForString(t *testing.T) {
+	arr := []string{"1", "4", "5", "67", "89", "0", "346", "3"}
+
+	new, err := For(arr, func(val string, index int) any {
+		if len(val) > 2 {
+			return val
+		}
+		return false
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log(new)
+}
+
+//func TestArrayFor(t *testing.T) {
+//	testCases := []struct {
+//		name    string
+//		input   any
+//		args    any
+//		wantOut any
+//		wantErr error
+//	}{
+//		{
+//			name:  "array for int",
+//			input: []int{1, 4, 5, 67, 89, 0, 346, 3},
+//			args: func(val int, index int) any {
+//				if val > 10 {
+//					return val
+//				}
+//				return false
+//			},
+//			wantOut: []int{67, 89, 346},
+//		},
+//		{
+//			name:  "array for string",
+//			input: []string{"1", "4", "5", "67", "89", "0", "346", "3"},
+//			args: func(val string, index int) any {
+//				if len(val) > 2 {
+//					return val
+//				}
+//				return false
+//			},
+//			wantOut: []string{"346"},
+//		},
+//	}
+//
+//	for _, tc := range testCases {
+//		t.Run(tc.name, func(t *testing.T) {
+//			i := tc.input.([]any)
+//			res, err := aa(i, tc.args)
+//
+//			assert.Equal(t, tc.wantErr, err)
+//			if err != nil {
+//				return
+//			}
+//
+//			assert.Equal(t, tc.wantOut, res)
+//		})
+//	}
+//}
+//
+//func aa[T arrayT](input []any, args any) ([]T, error) {
+//	var i []T
+//	for _, a := range input {
+//		i = append(i, a)
+//	}
+//	a := args.(func(T, int) any)
+//	return For(i, a)
+//}

go.mod

@@ -0,0 +1,11 @@
+module bekit
+
+go 1.19
+
+require github.com/stretchr/testify v1.8.0
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,15 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -0,0 +1,4 @@
+package main
+
+func main() {
+}

mapper/mapper.go

@@ -0,0 +1,5 @@
+package mapper
+
+type arrayT interface {
+	int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | string
+}

mapper/mapper_test.go

@@ -0,0 +1 @@
+package mapper