go基础库之通过正则表达式模式查找文本中的子字符串

package main

import (
	"fmt"
	"regexp"
)

const refString = `[{ \"email\": \"email@example.com\" \
                             "phone\": 555467890},
                            { \"email\": \"other@domain.com\" \
                             "phone\": 555467890}]`

func main() {

	// 为简洁起见，简化了这种模式
	emailRegexp := regexp.MustCompile("[a-zA-Z0-9]{1,}@[a-zA-Z0-9]{1,}\\.[a-z]{1,}")
	first := emailRegexp.FindString(refString)
	fmt.Println("First: ")
	fmt.Println(first)

	all := emailRegexp.FindAllString(refString, -1)
	fmt.Println("All: ")
	for _, val := range all {
		fmt.Println(val)
	}

}

$ go run regexp.go
First: 
email@example.com
All: 
email@example.com
other@domain.com