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ArrayUtil.go
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ArrayUtil.go
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package libs
import (
"reflect"
)
/**
判断obj是否存在于target中,类似于php的in_array方法
*/
func InArray(obj interface{}, target interface{}) (bool) {
targetValue := reflect.ValueOf(target)
switch reflect.TypeOf(target).Kind() {
case reflect.Slice, reflect.Array:
for i := 0; i < targetValue.Len(); i++ {
if targetValue.Index(i).Interface() == obj {
return true
}
}
case reflect.Map:
if targetValue.MapIndex(reflect.ValueOf(obj)).IsValid() {
return true
}
}
return false
}
func SliceInt64ToSliceIntf(s []int64) []interface{} {
ret := make([]interface{}, 0)
for _, v := range s {
ret = append(ret, v)
}
return ret
}
/**
* 过滤空字符串数组
* eg: ["aaa", "", "bbb"]
*/
func FilterStrArr(data []string) []string {
if len(data) == 0 {
return data
}
tmpArr := make([]string, 0)
for _, v := range data {
if v == "" {
continue
}
tmpArr = append(tmpArr, v)
}
return tmpArr
}
/**
* 过滤重复的字符串元素
* eg: ["a", "b", "a"]
*/
func UniqueStrArr(data []string) []string {
if len(data) == 0 {
return data
}
tmpArr := make([]string, 0)
for _, v := range data {
if InArray(v, tmpArr) {
continue
}
tmpArr = append(tmpArr, v)
}
return tmpArr
}
/**
* 获取在arr1但不在arr2中的元素(作用跟php的array_diff一样)
*
*/
func DiffStrArr(arr1 []string, arr2 []string) []string {
if len(arr2) == 0 {
return arr1
}
var diffArr []string
excludes := make(map[string]int)
for i, s := range arr2 {
excludes[s] = i
}
for _, s := range arr1 {
if _, ok := excludes[s]; ok {
continue
}
diffArr = append(diffArr, s)
}
return diffArr
}