Function UpsertHandlers

context/handler.go:373–389

UpsertHandlers like `JoinHandlers` but it does NOT copies the handlers entries and it does remove duplicates.

(h1 Handlers, h2 Handlers)

// UpsertHandlers like `JoinHandlers` but it does
// NOT copies the handlers entries and it does remove duplicates.
func UpsertHandlers(h1 Handlers, h2 Handlers) Handlers {
reg:
	for _, handler := range h2 {
		name := HandlerName(handler)
		for i, registeredHandler := range h1 {
			registeredName := HandlerName(registeredHandler)
			if name == registeredName {
				h1[i] = handler // replace this handler with the new one.
				continue reg    // break and continue to the next handler.
			}
		}

		h1 = append(h1, handler) // or just insert it.
	}

	return h1
}

// CopyHandlers returns a copy of "handlers" Handlers slice.
func CopyHandlers(handlers Handlers) Handlers {