1、正则匹配
package main
import (
"fmt"
"regexp"
)
func main() {
//pattern := "\\d+" //反斜杠要转义
pattern := "[a-zA-Z]" //匹配字母
str := "a1.22.35.4"
result, _ := regexp.MatchString(pattern, str)
fmt.Println(result) //true
}
2、判断元素是否在slice里或者数组里
package main
import "fmt"
import "github.com/wxnacy/wgo/arrays"
//go get github.com/wxnacy/wgo/arrays 安装包
func main() {
str := "342"
var numbers []string
numbers = append(numbers, "3332", "342", "ssddd", "ssss", "%%%%")
index := arrays.ContainsString(numbers, str)
if index == -1 {
fmt.Printf("not exists") //-1说明不存在
} else {
fmt.Println(index) //存在则会返回元素的下标
}
}