How to replace all variables in Sprintf with same variable in Go?

Question

Is it possible using fmt.Sprintf() to replace all variables in the formatted string with the same value?

Something like:
val := "foo"
s := fmt.Sprintf("%v in %v is %v", val)

which would return
"foo in foo is foo"

Chris Gregori · Accepted Answer

It's possible, but the format string must be modified, you must use explicit argument indicies Your example: val := "foo" s := fmt.Sprintf("%[1]v in %[1]v is %[1]v", val) fmt.Println(s) foo in foo is foo Of course the above example can simply be written in one line: fmt.Printf("%[1]v in %[1]v is %[1]v", "foo") Also as a minor simplification, the first explicit argument index may be omitted as it defaults to 1: fmt.Printf("%v in %[1]v is %[1]v", "foo")

Go Language

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