I am trying to format a string based on the elements received from the function calling it. This number of elements can varyfrom one to many.
Is there a way to call fmt.Sprintf with a variable number of elements. Something along the lines of:
receivedElements := []interface{}{"some","values"}
formattedString := fmt.Sprintf("Received elements: ...%s", receivedElements...)
Output: Received elements: some values
You can use https://golang.org/pkg/strings/#Repeat like that:
args := []interface{}{"some", "values"}
fmt.Println(fmt.Sprintf("values: " + strings.Repeat("%s ", len(args)), args...))
https://play.golang.org/p/75J6i2fSCaM
Or if you don't want to have last space in the line, you can create slice of %s and then use https://golang.org/pkg/strings/#Join
args := []interface{}{"some", "values"}
ph := make([]string, len(args))
for i, _ := range args {
ph[i] = "%s"
}
fmt.Println(fmt.Sprintf("values: " + strings.Join(ph, ", "), args...))