golang strings.Split函数
https://play.studygolang.com/
package main
import (
"fmt"
"strings"
)
func main() {
email := "abc@a.com"
emailS := strings.Split(email, "@")
fmt.Println(emailS) //[abc a.com]
s := strings.Split("abc,abc", "")
fmt.Println("empty separator ", s, len(s)) // [a b c , a b c] 7
s = strings.Split("", "")
fmt.Println("empty && empty ", s, len(s)) // [] 0
s = strings.Split("", ",")
fmt.Println("empty && not empty seperator ", s, len(s)) // [] 1 注意len是1，不是0
s = strings.Split("abc,abc", ",") // [abc abc] 2
fmt.Println(s, len(s))
s = strings.Split("abc,abc", "|")
fmt.Println("not contain separator ", s, len(s)) // not contain separator [abc,abc] 1
fmt.Println(len(""), len([]string{""})) // 0 1
//str := ""
//fmt.Println(str[0]) //panic: runtime error: index out of range [0] with length 0
// 取某一位的值
str := "abc"
fmt.Println(str[0]) // 97
str2 := "abc中午"
fmt.Printf("%v,%v,%v,%c", str2[0], str2[3], []byte(str2), []rune(str2)[3]) // 97,228,[97 98 99 228 184 173 229 141 136],中
}
