如何在 Golang 中的 Unicode 大小写折叠下检查 String 是否相等?
原文:https://www . geeksforgeeks . org/如何在 unicode 下检查字符串是否相等-大小写折叠在 golang/
在 Go 语言中,字符串不同于其他语言,如 Java 、 C++ 、 Python 等。它是一个可变宽度字符序列,其中每个字符都由一个或多个字节使用 UTF-8 编码来表示。 在 Go strings 中,借助 EqualFold() 功能,即使两个字符串写在不同的情况下(小写和大写),也可以毫无错误地相互比较。或者换句话说,该函数用于检查指定的字符串是否被解释为 UTF-8 字符串,并且在 Unicode 大小写折叠下是否相等。如果给定字符串在 Unicode 大小写折叠下相等,则此函数返回 true 如果给定字符串在 Unicode 大小写折叠下不相等,则返回 false。它是在字符串包下定义的,因此您必须在程序中导入字符串包才能访问 EqualFold 功能。
语法:
func EqualFold(str1, str2 string) bool
此函数的返回类型是 bool 类型。让我们借助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
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