| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| package util |
| |
| import ( |
| "reflect" |
| ) |
| |
| // IsNil check if the interface is nil |
| func IsNil(i interface{}) bool { |
| vi := reflect.ValueOf(i) |
| if vi.Kind() == reflect.Ptr { |
| return vi.IsNil() |
| } |
| return false |
| } |
| |
| // RemoveDuplicateElement remove repeating elements from the string slice |
| func RemoveDuplicateElement(addrs []string) []string { |
| result := make([]string, 0, len(addrs)) |
| temp := map[string]struct{}{} |
| for _, item := range addrs { |
| if _, ok := temp[item]; !ok { |
| temp[item] = struct{}{} |
| result = append(result, item) |
| } |
| } |
| return result |
| } |