Delegate.h File Reference

Multi-signature type-safe delegate implementation. More...

Detailed Description

Multi-signature type-safe delegate implementation.

This file provides a flexible delegate (callback) mechanism that supports multiple function signatures in a single delegate object. The delegate can store any callable object (lambda, function pointer, functor) and invoke it with different argument types based on compile-time signature matching.

Key features:

• Type-safe callback storage and invocation
• Support for multiple function signatures
• Small object optimization (128-byte inline storage)
• Move semantics and perfect forwarding
• Compile-time signature validation

Example:

// Define a delegate supporting two signatures
using MyDelegate = Delegate<
    void(int),           // Signature 1
    void(std::string)    // Signature 2
>;
 
MyDelegate delegate;
 
// Attach a handler that supports both signatures
delegate.attach([](auto value) {
    std::cout << "Received: " << value << std::endl;
});
 
// Invoke with different argument types
delegate(42);              // Calls void(int) signature
delegate("hello");         // Calls void(std::string) signature

#include "impl/Delegate.h"

Classes
class	b2bits::Delegate< Fs >
	Multi-signature delegate (callback) container. More...

Namespaces
namespace	b2bits