golang: NewReader vs NewBufferString

NewReader

func bytes.NewReader(b []byte) *bytes.Reader

bytes.NewReader on pkg.go.dev

NewReader returns a new Reader reading from b.

NewBufferString

func bytes.NewBufferString(s string) *bytes.Buffer

bytes.NewBufferString on pkg.go.dev

NewBufferString creates and initializes a new Buffer using string s as its initial contents. It is intended to prepare a buffer to read an existing string.