Commit 750d9492 authored by Matthias Vallentin's avatar Matthias Vallentin

Make message_handler interface similar to behavior.

parent 9934dbc1
...@@ -69,6 +69,13 @@ class message_handler { ...@@ -69,6 +69,13 @@ class message_handler {
*/ */
message_handler(impl_ptr ptr); message_handler(impl_ptr ptr);
/**
* Checks whether the message handler is not empty.
*/
inline operator bool() const {
return static_cast<bool>(m_impl);
}
/** /**
* Create a message handler a list of match expressions, * Create a message handler a list of match expressions,
* functors, or other message handlers. * functors, or other message handlers.
......
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