Replace w.Write([]byte(fmt.Sprintf())) with fmt.Fprintf()
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ID: go-best-practices/use-fprintf-when-possible
Language: Go
Severity: Warning
Category: Best Practices
Description
You do not need to convert the string into a slice of bytes to use Write, you can just use the string directly.
Non-Compliant Code Examples
package main
import (
"fmt"
"os"
)
func main(w, a x) {
r, w := io.Pipe()
go func() {
idx, name := "4th", "Mars"
w.Write([]byte(fmt.Sprintf("The %s planet is %s.\n", idx, name)))
w.Write([]byte(fmt.Sprint("The ", idx, " planet is ", name, ".\n")))
w.Write([]byte(fmt.Sprintln("The", idx, "planet is", name, ".")))
w.Close()
}()
if _, err := io.Copy(os.Stdout, r); err != nil {
log.Fatal(err)
}
}
Compliant Code Examples
package main
import (
"fmt"
"os"
)
func main() {
const idx, name = "4th", "Mars"
n, err := fmt.Fprint(os.Stdout, "The ", idx, " planet is ", name,".\n")
if err != nil {
fmt.Fprintf(os.Stderr, "Fprint: %v\n", err)
}
}
