2.1 字符串查询

package main

import (
    "fmt"
    "strings"
)

const refString = "Mary had a little lamb"

func main() {

    lookFor := "lamb"
    contain := strings.Contains(refString, lookFor)
    fmt.Printf("The \"%s\" contains \"%s\": %t \n", refString, lookFor, contain)

    lookFor = "wolf"
    contain = strings.Contains(refString, lookFor)
    fmt.Printf("The \"%s\" contains \"%s\": %t \n", refString, lookFor, contain)

    startsWith := "Mary"
    starts := strings.HasPrefix(refString, startsWith)
    fmt.Printf("The \"%s\" starts with \"%s\": %t \n", refString, startsWith, starts)

    endWith := "lamb"
    ends := strings.HasSuffix(refString, endWith)
    fmt.Printf("The \"%s\" ends with \"%s\": %t \n", refString, endWith, ends)

}

/*
The "Mary had a little lamb" contains "lamb": true
The "Mary had a little lamb" contains "wolf": false
The "Mary had a little lamb" starts with "Mary": true
The "Mary had a little lamb" ends with "lamb": true
*/