strings: Can't check strings.HasSuffix on string captured with reader.ReadString #17669
Description
go version go1.7
windows7/386
What did you do?
I was capturing strings with fmt.Scanln, but one of my needs is that the string must have spaces so I started to use reader.ReadString, I have to check the presence of a suffix in that string to make some replacing, so I used strings.HasSuffix. With strings captured with fmt.Scanln there was no problema but now that I use reader.ReadString it is unabled to find the given suffix in the string.
package main
import (
"bufio"
"fmt"
"strings"
"os"
"reflect"
)
const TOKEN string = ":="
func validate(expr string) {
fmt.Println("var type: ", reflect.TypeOf(expr))
if strings.Contains(expr, TOKEN) {
fmt.Println(expr, "contains works")
} else {
fmt.Println("error with contains")
}
if strings.HasSuffix(expr, TOKEN) {
fmt.Println(expr, "suffix works")
} else {
fmt.Println("error with suffix")
}
}
func main() {
var expr2 string
reader := bufio.NewReader(os.Stdin)
fmt.Print("type something finished with ':='")
expr1, _ := reader.ReadString('\n')
fmt.Scanln(&expr2)
fmt.Println("validation with reader: ")
validate(expr1)
fmt.Println()
fmt.Println("validation with Scanln: ")
validate(expr2)
}
What did you expect to see?
It is supposed to work, as both are the same type (string).
What did you see instead?
The check of suffix on strings captured with reader always fails.