qx-macros.h File Reference

The qx-concepts header file provides a set of various object-like and function-like macros that are designed to minimize the syntactic footprint of common tasks.

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Macros
#define	QBAL   QByteArrayLiteral
#define	QSL   QStringLiteral
#define	QX_EVAL_EACH(arg, ...)
#define	QX_FOR_EACH(macro, ...)
#define	QX_FOR_EACH_DELIM(macro, ...)
#define	QX_SCOPED_ENUM_HASH_FUNC(T)

Macro Definition Documentation

QBAL

#define QBAL   QByteArrayLiteral

This convenience macro is an alias for QByteArrayLiteral.

QSL

#define QSL   QStringLiteral

This convenience macro is an alias for QStringLiteral.

QX_EVAL_EACH

#define QX_EVAL_EACH	(		arg,
			... )

Value:

    __VA_OPT__(__QX_MACRO_EVALUATE(__QX_EVAL_EACH_APPLY_AND_ITERATE(arg, __VA_ARGS__)))

This function-like macro acts like a fold expression for its variadic arguments. It produces the result of calling all trailing macro functions with the argument arg.

For example:

#define F(x) //...
#define G(x) //...
#define H(x) //...
QX_EVAL_EACH(10, F, G, H) // -> F(10) G(10) H(10)

See also

QX_FOR_EACH()

QX_FOR_EACH

#define QX_FOR_EACH	(		macro,
			... )

Value:

    __VA_OPT__(__QX_MACRO_EVALUATE(__QX_FOR_EACH_APPLY_AND_ITERATE(macro, __VA_ARGS__)))

This function-like macro acts like a fold expression for its variadic arguments. It produces the result of calling the macro macro once for each argument that follows.

For example:

#define F(x) //...
QX_FOR_EACH(F, 1, 4, 10) // -> F(1) F(4) F(10)

See also

QX_FOR_EACH_DELIM()

QX_FOR_EACH_DELIM

#define QX_FOR_EACH_DELIM	(		macro,
			... )

Value:

    __VA_OPT__(__QX_MACRO_EVALUATE(__QX_FOR_EACH_APPLY_AND_ITERATE_DELIM(macro, __VA_ARGS__)))

Same as QX_FOR_EACH(), but a comma in placed between each resultant element.

#define F(x) //...
QX_FOR_EACH_DELIM(F, 1, 4, 10) // -> F(1), F(4), F(10)

QX_SCOPED_ENUM_HASH_FUNC

#define QX_SCOPED_ENUM_HASH_FUNC

(

T

)

Value:

inline size_t qHash(const T& t, size_t seed) { \
    return ::qHash(static_cast<typename std::underlying_type<T>::type>(t), seed); \
}

This function-like macro defines a qHash() overload for the provided scoped-enum type T.