JUCE: NamedValueSet Class Reference

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Classes | Public Member Functions | List of all members
NamedValueSet Class Reference
juce_core » containers

Holds a set of named var objects. More...

`#include <juce_NamedValueSet.h>`

## Classes
struct | NamedValue
| Structure for a named var object. More...

## Public Member Functions
| NamedValueSet () noexcept
| Creates an empty set.
| NamedValueSet (const NamedValueSet &)
| NamedValueSet (NamedValueSet &&) noexcept
NamedValueSet & | operator= (const NamedValueSet &)
NamedValueSet & | operator= (NamedValueSet &&) noexcept
| NamedValueSet (std::initializer_list< NamedValue >)
| Creates a NamedValueSet from a list of names and properties.
| ~NamedValueSet () noexcept
| Destructor.
bool | operator== (const NamedValueSet &) const noexcept
| Two NamedValueSets are considered equal if they contain all the same key/value pairs, regardless of the order.
bool | operator!= (const NamedValueSet &) const noexcept
const NamedValueSet::NamedValue * | begin () const noexcept
const NamedValueSet::NamedValue * | end () const noexcept
int | size () const noexcept
| Returns the total number of values that the set contains.
bool | isEmpty () const noexcept
| Returns true if the set is empty.
const var & | operator[] (const Identifier &name) const noexcept
| Returns the value of a named item.
var | getWithDefault (const Identifier &name, const var &defaultReturnValue) const
| Tries to return the named value, but if no such value is found, this will instead return the supplied default value.
bool | set (const Identifier &name, const var &newValue)
| Changes or adds a named value.
bool | set (const Identifier &name, var &&newValue)
| Changes or adds a named value.
bool | contains (const Identifier &name) const noexcept
| Returns true if the set contains an item with the specified name.
bool | remove (const Identifier &name)
| Removes a value from the set.
Identifier | getName (int index) const noexcept
| Returns the name of the value at a given index.
var * | getVarPointer (const Identifier &name) noexcept
| Returns a pointer to the var that holds a named value, or null if there is no value with this name.
const var * | getVarPointer (const Identifier &name) const noexcept
| Returns a pointer to the var that holds a named value, or null if there is no value with this name.
const var & | getValueAt (int index) const noexcept
| Returns the value of the item at a given index.
var * | getVarPointerAt (int index) noexcept
| Returns the value of the item at a given index.
const var * | getVarPointerAt (int index) const noexcept
| Returns the value of the item at a given index.
int | indexOf (const Identifier &name) const noexcept
| Returns the index of the given name, or -1 if it's not found.
void | clear ()
| Removes all values.
void | setFromXmlAttributes (const XmlElement &xml)
| Sets properties to the values of all of an XML element's attributes.
void | copyToXmlAttributes (XmlElement &xml) const
| Sets attributes in an XML element corresponding to each of this object's properties.

## Detailed Description

Holds a set of named var objects.

This can be used as a basic structure to hold a set of var object, which can be retrieved by using their identifier.

## Constructor & Destructor Documentation

## ◆ NamedValueSet() [1/4]

NamedValueSet::NamedValueSet | ( |  | ) |
| noexcept

Creates an empty set.

## ◆ NamedValueSet() [2/4]

NamedValueSet::NamedValueSet | ( | const NamedValueSet & |  | ) |

## ◆ NamedValueSet() [3/4]

NamedValueSet::NamedValueSet | ( | NamedValueSet && |  | ) |
| noexcept

## ◆ NamedValueSet() [4/4]

NamedValueSet::NamedValueSet | ( | std::initializer_list< NamedValue > |  | ) |

Creates a NamedValueSet from a list of names and properties.

## ◆ ~NamedValueSet()

NamedValueSet::~NamedValueSet | ( |  | ) |
| noexcept

Destructor.

## Member Function Documentation

## ◆ operator=() [1/2]

NamedValueSet & NamedValueSet::operator= | ( | const NamedValueSet & |  | ) |

## ◆ operator=() [2/2]

NamedValueSet & NamedValueSet::operator= | ( | NamedValueSet && |  | ) |
| noexcept

## ◆ operator==()

bool NamedValueSet::operator== | ( | const NamedValueSet & |  | ) | const
| noexcept

Two NamedValueSets are considered equal if they contain all the same key/value pairs, regardless of the order.

## ◆ operator!=()

bool NamedValueSet::operator!= | ( | const NamedValueSet & |  | ) | const
| noexcept

## ◆ begin()

const NamedValueSet::NamedValue * NamedValueSet::begin | ( |  | ) | const
| noexcept

## ◆ end()

const NamedValueSet::NamedValue * NamedValueSet::end | ( |  | ) | const
| noexcept

## ◆ size()

int NamedValueSet::size | ( |  | ) | const
| noexcept

Returns the total number of values that the set contains.

## ◆ isEmpty()

bool NamedValueSet::isEmpty | ( |  | ) | const
| noexcept

Returns true if the set is empty.

## ◆ operator[]()

const var & NamedValueSet::operator[] | ( | const Identifier & | name | ) | const
| noexcept

Returns the value of a named item.

If the name isn't found, this will return a void variant.

## ◆ getWithDefault()

var NamedValueSet::getWithDefault | ( | const Identifier & | name,
|  | const var & | defaultReturnValue ) const

Tries to return the named value, but if no such value is found, this will instead return the supplied default value.

## ◆ set() [1/2]

bool NamedValueSet::set | ( | const Identifier & | name,
|  | const var & | newValue )

Changes or adds a named value.

Returns
  true if a value was changed or added; false if the value was already set the value passed-in.

## ◆ set() [2/2]

bool NamedValueSet::set | ( | const Identifier & | name,
|  | var && | newValue )

Changes or adds a named value.

Returns
  true if a value was changed or added; false if the value was already set the value passed-in.

## ◆ contains()

bool NamedValueSet::contains | ( | const Identifier & | name | ) | const
| noexcept

Returns true if the set contains an item with the specified name.

## ◆ remove()

bool NamedValueSet::remove | ( | const Identifier & | name | ) |

Removes a value from the set.

Returns
  true if a value was removed; false if there was no value with the name that was given.

## ◆ getName()

Identifier NamedValueSet::getName | ( | int | index | ) | const
| noexcept

Returns the name of the value at a given index.

The index must be between 0 and size() - 1.

## ◆ getVarPointer() [1/2]

var * NamedValueSet::getVarPointer | ( | const Identifier & | name | ) |
| noexcept

Returns a pointer to the var that holds a named value, or null if there is no value with this name.

Do not use this method unless you really need access to the internal var object for some reason - for normal reading and writing always prefer operator[]() and set(). Also note that the pointer returned may become invalid as soon as any subsequent methods are called on the NamedValueSet.

## ◆ getVarPointer() [2/2]

const var * NamedValueSet::getVarPointer | ( | const Identifier & | name | ) | const
| noexcept

Returns a pointer to the var that holds a named value, or null if there is no value with this name.

Do not use this method unless you really need access to the internal var object for some reason - for normal reading and writing always prefer operator[]() and set(). Also note that the pointer returned may become invalid as soon as any subsequent methods are called on the NamedValueSet.

## ◆ getValueAt()

const var & NamedValueSet::getValueAt | ( | int | index | ) | const
| noexcept

Returns the value of the item at a given index.

The index must be between 0 and size() - 1.

## ◆ getVarPointerAt() [1/2]

var * NamedValueSet::getVarPointerAt | ( | int | index | ) |
| noexcept

Returns the value of the item at a given index.

The index must be between 0 and size() - 1, or this will return a nullptr Also note that the pointer returned may become invalid as soon as any subsequent methods are called on the NamedValueSet.

## ◆ getVarPointerAt() [2/2]

const var * NamedValueSet::getVarPointerAt | ( | int | index | ) | const
| noexcept

Returns the value of the item at a given index.

The index must be between 0 and size() - 1, or this will return a nullptr Also note that the pointer returned may become invalid as soon as any subsequent methods are called on the NamedValueSet.

## ◆ indexOf()

int NamedValueSet::indexOf | ( | const Identifier & | name | ) | const
| noexcept

Returns the index of the given name, or -1 if it's not found.

## ◆ clear()

void NamedValueSet::clear | ( |  | ) |

Removes all values.

## ◆ setFromXmlAttributes()

void NamedValueSet::setFromXmlAttributes | ( | const XmlElement & | xml | ) |

Sets properties to the values of all of an XML element's attributes.

## ◆ copyToXmlAttributes()

void NamedValueSet::copyToXmlAttributes | ( | XmlElement & | xml | ) | const

Sets attributes in an XML element corresponding to each of this object's properties.

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

- juce_NamedValueSet.h