qstringview.h File Reference

(e78d0a75163579e095de0341cd7c827744f39b94)

#include <QtCore/qchar.h>
#include <QtCore/qcompare.h>
#include <QtCore/qcontainerfwd.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qstringfwd.h>
#include <QtCore/qstringalgorithms.h>
#include <string>
#include <string_view>
#include <QtCore/q20type_traits.h>

Include dependency graph for qstringview.h:

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Classes
struct	QtPrivate::IsCompatibleCharTypeHelper< Char >
struct	QtPrivate::IsCompatibleCharType< Char >
struct	QtPrivate::IsCompatiblePointerHelper< Pointer >
struct	QtPrivate::IsCompatiblePointerHelper< Char * >
struct	QtPrivate::IsCompatiblePointer< Pointer >
struct	QtPrivate::IsContainerCompatibleWithQStringView< T, Enable >
struct	QtPrivate::IsContainerCompatibleWithQStringView< T, std::enable_if_t< std::conjunction_v< IsCompatiblePointer< decltype(std::data(std::declval< const T & >()))>, std::is_convertible< decltype(std::size(std::declval< const T & >())), qsizetype >, IsCompatibleCharType< typename std::iterator_traits< decltype(std::begin(std::declval< const T & >()))>::value_type >, std::is_convertible< decltype(std::begin(std::declval< const T & >()) !=std::end(std::declval< const T & >())), bool >, std::negation< std::is_same< std::decay_t< T >, QString > >,#define QSTRINGVIEW_REFUSES_QSTRINGREF std::negation< std::is_same< q20::remove_cvref_t< T >, QStringRef > >, std::negation< std::is_same< std::decay_t< T >, QStringView > > > > >
class	QStringView
	\inmodule QtCore More...

Namespaces
namespace	QtPrivate
namespace	Qt
namespace	Qt::Literals
namespace	Qt::Literals::StringLiterals

Macros
#define	QSTRINGVIEW_REFUSES_QSTRINGREF   1

Functions
	Q_DECLARE_TYPEINFO (QStringView, Q_PRIMITIVE_TYPE)
template<typename QStringLike, typename std::enable_if< std::is_same< QStringLike, QString >::value, bool >::type = true>
QStringView	qToStringViewIgnoringNull (const QStringLike &ss) noexcept
constexpr QStringView	Qt::Literals::StringLiterals::operator""_sv (const char16_t *str, size_t sizesize) noexcept

Macro Definition Documentation

QSTRINGVIEW_REFUSES_QSTRINGREF

#define QSTRINGVIEW_REFUSES_QSTRINGREF   1

Function Documentation

Q_DECLARE_TYPEINFO()

Q_DECLARE_TYPEINFO	(	QStringView	,
		Q_PRIMITIVE_TYPE	)

qToStringViewIgnoringNull()

template<typename QStringLike, typename std::enable_if< std::is_same< QStringLike, QString >::value, bool >::type = true>

QStringView qToStringViewIgnoringNull ( const QStringLike & s )

inlinenoexcept

Since

5.10

Convert s to a QStringView ignoring {s.isNull()}.

Returns a string view that references {s}' data, but is never null.

This is a faster way to convert a QString to a QStringView, if null QStrings can legitimately be treated as empty ones.

See also

QString::isNull(), QStringView

Definition at line 530 of file qstringview.h.