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Elementary writing of a string to a buffer

The target is of type *buffer.Bytes and the string is simply written to it. An elementary case is considered. Any formatting or processing makes this benchmark irrelevant. This module is using methods writing a string without conversion.

  • fmt.Fprint
  • WriteString() method of buffer package
  • io.WriteString()

As fmt offers more possibilities, it takes about 3x the cost as others.

src>go test -bench=. ./writestring

Results

go version go1.12.6 windows/amd64
pkg: github.com/iWdGo/GoCompilerEfficiency/src/writestring
BenchmarkFmtWriteString-4        1000000              1885 ns/op
BenchmarkIoWriteString-4         2000000               694 ns/op
BenchmarkBufferWriteString-4     3000000               447 ns/op
PASS