libsigc++: sigc::nil Struct Reference

libsigc++ 2.4.1

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sigc::nil Struct Reference
Signals Functors » | Slots

nil struct type. More...

`#include <sigc++/functors/functor_trait.h>`

## Detailed Description

nil struct type.

The nil struct type is used as default template argument in the unnumbered sigc::signal and sigc::slot templates.