layout	default
title	Process
type_tag	function
groups	name url Home name url Reference reference/ name url Event.h reference/Event.h/

Syntax

{% highlight C++ %} // (1) template < typename T, typename D, typename E, typename F

Events<D,T> Process(const Events<D,E>& source, F&& func);

// (2) template < typename T, typename D, typename E, typename F, typename ... TDepValues

Events<D,T> Process(const Events<D,E>& source, const SignalPack<D,TDepValues...>& depPack, F&& func); {% endhighlight %}

Semantics

(1) func(range, out) is called with all events range from source in current turn, under the condition that the number of events is greater zero. New events are emitted through *out = e.

(2) Similar to (1), but the synchronized values of signals in depPack are passed to func as additional arguments.

Note: Changes of signals in depPack do not trigger an update - only received events do.

The signature of func should be equivalent to:

• (1) void func(EventRange<E> range, EventEmitter<T> out)
• (2) void func(EventRange<E> range, EventEmitter<T> out, const TDepValues& ...)

The type of outgoing events T has to be specified explicitly, i.e. Process<T>(src, func).

EventRange is an adapter that exposes random access input iterators to begin and end of the source event container. EventEmitter is a std::back_insert_iterator of the output event container.

Graph

(1)

(2)