strings

package main
import (
    "fmt"
    "reflect"
    "strings"
)
var p = fmt.Println
func main() {
    src := "this is a string"
    //是否包含ing，返回布尔值
    p("Contains:    ", strings.Contains(src, "ing"))
    //计算i 出现的次数，返回次数
    p("Count:    ", strings.Count(src, "i"))
    //字符串是否以dd开头，返回布尔值，HasSuffix 判断后缀
    p("HasPrefix:    ", strings.HasPrefix(src, "dd"))
    //查找i在字符串中的下标，从左往右第一个，返回下标
    p("Index:    ", strings.Index(src, "i"))
    //查找最后一次出现的位置,返回从左往右的下标
    p("LastIndex    ", strings.LastIndex(src, "i"))
    //用-连接数组s
    var s = []string{"aa", "bb", "cc"}
    p("Join:    ", strings.Join(s, "-"))
    //将字符串重复两次，就是将src 乘2 合并成一个
    p("Repeat:    ", strings.Repeat(src, 2))
    //大小写转换，小写：ToLower
    p("ToUpper:    ", strings.ToUpper(src))
    //以指定的分隔符分割字符串//Split:   []string [a c d e]
    var a string = "a,c,d,e"
    p("Split:    ", reflect.TypeOf(strings.Split(a, ",")), strings.Split(a, ","))
}