Function Append

lib/util.go:945–950

Append() is a 'safe append' when the caller wants to re-use the 'a' slice

(a, b []byte)

// Append() is a 'safe append' when the caller wants to re-use the 'a' slice
func Append(a, b []byte) []byte {
	out := make([]byte, len(a)+len(b))
	copy(out, a)
	copy(out[len(a):], b)
	return out
}

// AppendWithBuffer() appends a and b into a fresh []byte using a buffer to reduce allocations.
// The result is safe to retain and use independently of a/b/buffer.