juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator Struct Reference

Detailed Description

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>
struct juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator

Iterates over the items in a HashMap.

To use it, repeatedly call next() until it returns false, e.g.

HashMap <String, String> myMap;
 
HashMap<String, String>::Iterator i (myMap);
 
while (i.next())
{
    DBG (i.getKey() << " -> " << i.getValue());
}

The order in which items are iterated bears no resemblance to the order in which they were originally added!

Obviously as soon as you call any non-const methods on the original hash-map, any iterators that were created beforehand will cease to be valid, and should not be used.

See also

HashMap

Public Member Functions
	Iterator (const HashMap &hashMapToIterate) noexcept
	Iterator (const Iterator &other) noexcept
bool	next () noexcept
	Moves to the next item, if one is available.
KeyType	getKey () const
	Returns the current item's key.
ValueType	getValue () const
	Returns the current item's value.
void	reset () noexcept
	Resets the iterator to its starting position.
Iterator &	operator++ () noexcept
ValueType	operator* () const
bool	operator!= (const Iterator &other) const noexcept
void	resetToEnd () noexcept

Constructors and Destructors

Iterator() [1/2]

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::Iterator ( const HashMap & hashMapToIterate )

noexcept

References juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::HashMap().

Referenced by Iterator(), operator!=(), and operator++().

Iterator() [2/2]

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::Iterator ( const Iterator & other )

noexcept

References Iterator().

Member Functions

next()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

bool juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::next ( )

noexcept

Moves to the next item, if one is available.

When this returns true, you can get the item's key and value using getKey() and getValue(). If it returns false, the iteration has finished and you should stop.

Referenced by juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::begin(), and operator++().

getKey()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

KeyType juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::getKey

(

)

const

Returns the current item's key.

This should only be called when a call to next() has just returned true.

getValue()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

ValueType juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::getValue

(

)

const

Returns the current item's value.

This should only be called when a call to next() has just returned true.

Referenced by operator*().

reset()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

void juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::reset ( )

noexcept

Resets the iterator to its starting position.

operator++()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

Iterator & juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::operator++ ( )

noexcept

References Iterator(), and next().

operator*()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

ValueType juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::operator*

(

)

const

References getValue().

operator!=()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

bool juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::operator!= ( const Iterator & other ) const

noexcept

References Iterator().

resetToEnd()

template<typename KeyType, typename ValueType, class HashFunctionType = DefaultHashFunctions, class TypeOfCriticalSectionToUse = DummyCriticalSection>

void juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::Iterator::resetToEnd ( )

noexcept

Referenced by juce::HashMap< KeyType, ValueType, HashFunctionType, TypeOfCriticalSectionToUse >::end().