Golang 如何检查Unicode大小写折叠下的字符串是否相等

在Go语言中，字符串与其他语言如Java、C++、Python等不同。

在Go语言的字符串中，你可以在EqualFold()函数的帮助下，将两个字符串相互比较，即使它们以不同的大小写（小写和大写）书写，也不会有任何错误。或者换句话说，这个函数用来检查指定的字符串是否被解释为UTF-8字符串，以及在Unicode大小写折叠下是否相等。如果给定的字符串在Unicode大小写折叠下相等，则该函数返回true；如果给定的字符串在Unicode大小写折叠下不相等，则返回false。它被定义在strings包中，因此，你必须在你的程序中导入strings包以访问EqualFold函数。

语法

func EqualFold(str1, str2 string) bool

这个函数的返回类型是bool类型。让我们借助于例子来讨论这个概念。

例1 :

// Go program to illustrate how to
// check the given strings are equal or not
package main
  
import (
    "fmt"
    "strings"
)
  
// Main function
func main() {
  
    // Creating strings
    // Using var keyword
    var username string
    var uinput string
  
    // Initializing strings
    username = "AnkitaSaini"
    uinput = "ankitasaINI"
  
    // Checking whether the given
    // strings are equal or not
    // Using EqualFold() function
    res := strings.EqualFold(username, uinput)
  
    // Displaying the result according
    // to the given condition
    if res == true {
  
        fmt.Println("!..Successfully Matched..!")
    } else {
  
        fmt.Println("!..Not Matched..!")
    }
  
}

输出

!..Successfully Matched..!

例2 :

// Go program to illustrate how to check
// the given strings are equal or not
package main
  
import (
    "fmt"
    "strings"
)
  
// Main function
func main() {
  
    // Creating and initializing strings
    // Using shorthand declaration
    s1 := "I am working as a Technical content writer, in GeeksforGeeks!"
    s2 := "I am currently writing articles on Go language!"
  
    // Checking the given strings are equal or not
    // Using EqualFold() function
    res1 := strings.EqualFold(s1, "I AM WORKING AS A TECHNICAL CONTENT WRITER, IN GEEKSFORGEEKS!")
    res2 := strings.EqualFold(s1, "I AM working AS A Technical CONTENT writer, IN GeeksforGeeks!")
    res3 := strings.EqualFold(s1, "Apple")
    res4 := strings.EqualFold(s2, "I am currently writing articles on Go language!")
    res5 := strings.EqualFold(s2, "I am currently writing ARTICLES on Go language!")
    res6 := strings.EqualFold("GeeksforGeeks", "geeksForgeeks")
  
    // Displaying results
    fmt.Println("Result 1: ", res1)
    fmt.Println("Result 2: ", res2)
    fmt.Println("Result 3: ", res3)
    fmt.Println("Result 4: ", res4)
    fmt.Println("Result 5: ", res5)
    fmt.Println("Result 6: ", res6)
  
}

输出

Result 1:  true
Result 2:  true
Result 3:  false
Result 4:  true
Result 5:  true
Result 6:  true