concat vs sprintf.go

var sink string
var x string = "somestring"

// BenchmarkPrint-8        10000000               198 ns/op              32 B/op          2 allocs/op
func BenchmarkPrint(b *testing.B) {
	b.ReportAllocs()
	var s string
	for i := 0; i < b.N; i++ {
		s = fmt.Sprintf("abc.%s", x)
	}
	sink = s
}

// BenchmarkConcat-8       20000000                62.6 ns/op            16 B/op          1 allocs/op
func BenchmarkConcat(b *testing.B) {
	b.ReportAllocs()
	var s string
	for i := 0; i < b.N; i++ {
		s = "abc." + x
	}
	sink = s
}