Golang strconv.AppendQuoteRuneToASCII()用法及代碼示例

Go語言提供了內置支持，以實現strconv Package與基本數據類型的字符串表示之間的轉換。該軟件包提供了AppendQuoteRuneToASCII()函數，該函數用於將由QuoteRuneToASCII生成的代表符文x的single-quoted Go字符文字附加到num並返回擴展緩衝區。換句話說，AppendQuoteRuneToASCII()函數用於將Unicode字符轉換為“single quotes”產生的ASCII字符串，將結果附加到num的末尾並返回附加的[] byte。要訪問AppendQuoteRuneToASCII()函數，您需要在程序中導入strconv軟件包。

用法:

func AppendQuoteRuneToASCII(num []byte, x rune) []byte

此處，num是[] bytes，x是符文文字。 x的結果將附加到num的末尾。

範例1：

// Golang program to illustrate the 
// strconv.AppendQuoteRuneToASCII() function
package main

import (
    "fmt"
    "strconv"
)

func main() {

         // Converting Unicode characters to 
         // ASCII strings resulting from "single quotes"
         // append the result to the end of the given []byte
         // Using AppendQuoteRuneToASCII() function
         val1:= []byte("Rune 1:")
         val1 = strconv.AppendQuoteRuneToASCII(val1, 'B')
         fmt.Println(string(val1))

         val2:= []byte("Rune 2:")
         val2 = strconv.AppendQuoteRuneToASCII(val2, '✈')
         fmt.Println(string(val2))

}

輸出：

Rune 1:'B'
Rune 2:'\u2708'

範例2：

// Golang program to illustrate the 
// strconv.AppendQuoteRuneToASCII() function
package main

import (
    "fmt"
    "strconv"
)

func main() {

    // Converting Unicode characters to ASCII
    // strings resulting from "single quotes"
    // append the result to the end of the given []byte
    // Using AppendQuoteRuneToASCII() function
    val1:= []byte("Rune 1:")
    val1 = strconv.AppendQuoteRuneToASCII(val1, 'c')
    fmt.Println(string(val1))
    fmt.Println("Length:", len(val1))
    fmt.Println("Capacity:", cap(val1))

    val2:= []byte("Rune 2:")
    val2 = strconv.AppendQuoteRuneToASCII(val2, '❄')
    fmt.Println(string(val2))
    fmt.Println("Length:", len(val2))
    fmt.Println("Capacity:", cap(val2))
    

}

輸出：

Rune 1:'c'
Length: 11
Capacity: 16
Rune 2:'\u265b'
Length: 16
Capacity: 16