![]() Thread-safety: several threads may connect/disconnect/invoke the same signal concurrently, without introducing race conditions.Std::cout << "TextView: " << m_document.getText() << std::endl īoost::signals2::connection m_connection īoost.Signals2 is not just "an array of callbacks", it has a lot of added value. M_connection = m_nnect(boost::bind(&TextView::refresh, this)) * Connect a slot to the signal which will be emitted wheneverīoost::signals2::connection connect(const signal_t::slot_type &subscriber) Typedef boost::signals2::signal signal_t How is this pattern better suited than say, using a vector of functions and calling each one in a loop, or say a lambda that calls state changes in registered listening class instances? class Document One to the example cases is a document/view. ![]() Coming from a dynamically typed background (C#,Java etc) you'd use an event dispatcher or a static ref or a callback.Īre there difficulties in c++ with using cross-class callbacks? Is that essentially why signals2 exists? I'm thinking along the lines of a state machine dispatching change events. What I don't understand is what types of applications (use cases) I should use it for. The signals2 doc clearly has a vast array of things I can do with slots and signals. Learning c++ and trying to get familiar with some patterns.
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