qx-helpers.h File Reference

The qx-concepts header file provides a set of various convenience functions that are are designed to facilitate common fundamental tasks with as brief syntax as possible.

#include <type_traits>
#include <utility>
#include <QMetaObject>
#include <QObject>
#include "qx/utility/qx-typetraits.h"
#include "qx/utility/qx-concepts.h"

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Classes
struct	qxFuncAggregate< Functors >
class	Qx::ScopedConnection
	The ScopedConnection class disconnects a connection when it goes out of scope. More...

Namespaces
namespace	Qx
	The Qx namespace is the main namespace through which all non-global functionality of the Qx library is accessed.

Concepts
concept	Qx::arrowable_container_type

Typedefs
template<typename T>
using	Qx::container_arrow_result

Functions
template<arrowable_container_type T>
container_arrow_result< T >	Qx::container_arrow_operator (T &data)
template<typename T>
const T	qxAsConst (T &&t)
template<typename T>
std::add_const< T >::type	qxAsConst (T &t)
template<typename T>
void	qxDelete (T *&pointer)
template<typename PointerToMemberFunction, typename Functor>
ScopedConnection	Qx::scopedConnect (const QObject *sender, PointerToMemberFunction signal, Functor &&functor)

Function Documentation

qxAsConst() [1/2]

template<typename T>

const T qxAsConst

(

T &&

t

)

Serves the same purpose as std::as_const() (preventing implicitly-shared Qt containers from detaching), but this version works for rvalues, albeit with some efficiency concerns depending on the nature of t.

qxAsConst() [2/2]

template<typename T>

std::add_const< T >::type qxAsConst

(

T &

t

)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Equivalent to std::as_const(T& t).

This overload exists so that qxAsConst can consistently be used everywhere for both lvalues and rvalues, instead of having to employ mixed usage of qxAsConst() and std::as_const().

qxDelete()

template<typename T>

void qxDelete

(

T *&

pointer

)

Calls delete on pointer and then sets it to nullptr .