我正在學習 Golang 使用 go v1.18 得到了一些奇怪的輸出，當我列印時firstName, lastName, birthday, created只得到了結果，因為created
我已經列印了宣告變數并再次列印了整個東西它作業正常問題出在var reader = bufio.NewReader(os.Stdin)
package main
import (
"bufio"
"fmt"
"os"
"strings"
"time"
)
var reader = bufio.NewReader(os.Stdin)
func main() {
firstName := getUserData("Enter First Name: ")
lastName := getUserData("Enter Last Name: ")
birthdate := getUserData("Enter Date of Birth: ")
created := time.Now()
fmt.Println(firstName, lastName, birthdate, created) //only prints created
fmt.Println(firstName) // prints firstName
fmt.Println(lastName) // prints lastName
fmt.Println(birthdate) // prints birthdate
fmt.Println(created) // prints created
}
func getUserData(promptText string) string {
fmt.Print(promptText)
userInput, _ := reader.ReadString('\n')
cleanedInput := strings.Replace(userInput, "\n", "", -1)
return cleanedInput
}
uj5u.com熱心網友回復：
你必須使用strings.TrimSpace而不是strings.Replace
因為在你的代碼中你沒有洗掉回車\r
請參閱下面的更正代碼。
package main
import (
"bufio"
"fmt"
"os"
"strings"
"time"
)
var reader = bufio.NewReader(os.Stdin)
func main() {
firstName := getUserData("Enter First Name: ")
lastName := getUserData("Enter Last Name: ")
birthdate := getUserData("Enter Date of Birth: ")
created := time.Now()
fmt.Println(firstName, lastName, birthdate, created) //will print all
fmt.Println(firstName) // prints firstName
fmt.Println(lastName) // prints lastName
fmt.Println(birthdate) // prints birthdate
fmt.Println(created) // prints created
}
func getUserData(promptText string) string {
fmt.Print(promptText)
userInput, _ := reader.ReadString('\n')
cleanedInput := strings.TrimSpace(userInput)
return cleanedInput
}
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標籤：走