helios::utils::Defer< F > Class Template Reference

A utility class that defers the execution of a callable until the object goes out of scope. More...

#include <defer.hpp>

Public Member Functions
	Defer ()=delete
constexpr	Defer (F func) noexcept(std::is_nothrow_move_constructible_v< F >)
	Constructs a Defer object that will execute the provided callable upon destruction.
	Defer (Defer &&)=delete
	Defer (const Defer &)=delete
constexpr	~Defer () noexcept(std::is_nothrow_invocable_v< F >)
Defer &	operator= (const Defer &)=delete
Defer &	operator= (Defer &&)=delete

Detailed Description

template<std::invocable F>
class helios::utils::Defer< F >

A utility class that defers the execution of a callable until the object goes out of scope.

Template Parameters

F	The type of the callable to be executed upon destruction.

// Pattern 1: Pre-defined lambda
auto cleanup = [resource]() { delete resource; };
HELIOS_DEFER_CALL(cleanup);
 
// Pattern 2: Inline lambda (no capture list needed)
HELIOS_DEFER {
  delete resource;
};

Definition at line 29 of file defer.hpp.

Constructor & Destructor Documentation

Defer() [1/4]

template<std::invocable F>

helios::utils::Defer< F >::Defer ( )

delete

Defer() [2/4]

template<std::invocable F>

helios::utils::Defer< F >::Defer ( F func )

inlineexplicitconstexprnoexcept

Constructs a Defer object that will execute the provided callable upon destruction.

Parameters

func	The callable to be executed.

Definition at line 38 of file defer.hpp.

Defer() [3/4]

template<std::invocable F>

helios::utils::Defer< F >::Defer ( Defer< F > && )

delete

Defer() [4/4]

template<std::invocable F>

helios::utils::Defer< F >::Defer ( const Defer< F > & )

delete

~Defer()

template<std::invocable F>

helios::utils::Defer< F >::~Defer ( )

inlineconstexprnoexcept

Definition at line 43 of file defer.hpp.

Member Function Documentation

operator=() [1/2]

template<std::invocable F>

Defer & helios::utils::Defer< F >::operator= ( const Defer< F > & )

delete

operator=() [2/2]

template<std::invocable F>

Defer & helios::utils::Defer< F >::operator= ( Defer< F > && )

delete