func ExampleMakeGetKeys() { // let's extract the keys of a map var getKeys func(map[string]int) []string if err := funcs.MakeGetKeys(&getKeys); err != nil { log.Fatal(err) } Map := map[string]int{"a": 1, "b": 2, "c": 3, "d": 4} keys := getKeys(Map) fmt.Println(len(keys)) // Output: // 4 }
result += "fields :[\n" for i, field := range meta.fields { if i > 0 { result += ",\n " } result += "{" + field.String() + "}" } return result + "\n]}\n" } var ( keyValuesByObjectID func(collection []reflect.Value, selector func(reflect.Value) bson.ObjectId) map[bson.ObjectId]reflect.Value _ = funcs.Must(funcs.MakeKeyBy(&keyValuesByObjectID)) getKeys func(map[bson.ObjectId]reflect.Value) []bson.ObjectId _ = funcs.Must(funcs.MakeGetKeys(&getKeys)) flatten func([][]interface{}) []interface{} _ = funcs.Must(funcs.MakeFlatten(&flatten)) mapResultsToInterfaces func([]map[string]interface{}, func(map[string]interface{}) []interface{}) [][]interface{} _ = funcs.Must(funcs.MakeMap(&mapResultsToInterfaces)) keyResultsBySourceID func(results []map[string]interface{}, mapper func(result map[string]interface{}) (id bson.ObjectId)) map[bson.ObjectId]map[string]interface{} _ = funcs.Must(funcs.MakeKeyBy(&keyResultsBySourceID)) mapResultsToRelatedObjectIds func(results []map[string]interface{}, mapper func(result map[string]interface{}) bson.ObjectId) []bson.ObjectId _ = funcs.Must(funcs.MakeMap(&mapResultsToRelatedObjectIds)) keyRelatedResultsByObjectID func(results []reflect.Value, mapper func(result reflect.Value) bson.ObjectId) map[bson.ObjectId]reflect.Value _ = funcs.Must(funcs.MakeKeyBy(&keyRelatedResultsByObjectID))