init

Telegram/lib_rpl/rpl/before_next.h

@@ -0,0 +1,23 @@
+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include <rpl/producer.h>
+#include <rpl/filter.h>
+
+namespace rpl {
+
+template <typename SideEffect>
+inline auto before_next(SideEffect &&method) {
+	return filter([method = std::forward<SideEffect>(method)](
+			const auto &value) {
+		details::callable_invoke(method, value);
+		return true;
+	});
+}
+
+} // namespace rpl