Helper::ScopeGuard< F > Class Template Reference

When an object created within a given scope leaves that scope, the corresponding input function is executed. More...

#include <management.hpp>

Public Member Functions
	ScopeGuard (F &&fn)
	Constructor with function input.
	ScopeGuard (const ScopeGuard &)=delete
	This class is not copyable.
	ScopeGuard (ScopeGuard &&other) noexcept
	Move constructor.
	~ScopeGuard ()
	Run function if scope guard is active.
void	now () noexcept
	Run process now.
void	dismiss () noexcept
	Disable scope guard.
auto	release () noexcept
	Release.
ScopeGuard &	operator= (const ScopeGuard &)=delete
	This class is not copyable.

Detailed Description

template<std::invocable F>
class Helper::ScopeGuard< F >

When an object created within a given scope leaves that scope, the corresponding input function is executed.

int main(void) {
  {
    int fd = open("file.txt", O_RDONLY);
    int* ptr = calloc(100, sizeof(int));
    auto scope1 = makeScopeGuard([&] { close(fd); });
    auto scope2 = makeScopeGuard([&] { free(ptr); ptr = nullptr; });
  }
 
  return 0;
}

Template Parameters

F

Function.

See also

C++ scopes

Helper::makeScopeGuard

Note

Input functions can never be parameterized.

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The documentation for this class was generated from the following file:

• srclib/libhelper/include/libhelper/management.hpp