template<typename, typename, typename, typename>
class Geo::GeoHashMap

The hash table.

It's a straight forward key/value hash table where every key has one associated value (so it's a hash map, rather than a hash multi map).

Typedefs

Name	Description
GeoHashConstHandle< GeoHashMap > ConstHandle	A const handle to an entry in the container.
const DataType & DataParamType	The Data type stored internally when passed as a parameter.
GeoPair< KeyType, ValueType > DataType	The Data type stored internally.
GeoHashHandle< GeoHashMap > Handle	A handle to an entry in the container.
tHashFunctor HashFunctor	The specified Hash Functor type.
tKeyCmp KeyCompareFunctor	The specified Key Compare type.
const KeyType & KeyParamType	The Key type when passed as a parameter.
tKey KeyType	The specified Key type.
const ValueType & ValueParamType	The Value type when passed as a parameter.
tValue ValueType	The specified Value type.

Variables

Name	Description
const u32 MemoryAlignment = GEO_ALIGN_OF(DataType) > GEO_ALIGN_OF(u32) ? GEO_ALIGN_OF(DataType) : GEO_ALIGN_OF(u32)	The required alignment of the memory block passed to the appropriate GeoHashMap constructor.

Functions

Name	Description
~GeoHashMap()	Delete.
CalcMemoryUsage(u32)	Gets the amount of memory (in bytes) required by a GeoHashMap with the given capacity.
Clear()	Clears the table.
Exists(KeyParamType)	This returns true if the key exists.
GeoHashMap(u32, float, HashFunctor, KeyCompareFunctor)	Construct a hash table.
GeoHashMap(void *, u32, HashFunctor, KeyCompareFunctor)	Construct a hash table using the given block of memory for storage. The given block must be at least the size returned by CalcMemoryUsage() and be 4-byte aligned.
GeoHashMap(const GeoHashMap &)	Copy-constructor.
GeoHashMap(GeoHashMap &&)	Move constructor.
operator=(const GeoHashMap &)	Assignment operator.
operator=(GeoHashMap &&)	Move assignment operator.
Remove(KeyParamType)	Removes the key/value pair indexed by this key.
Remove(Handle)	Removes the key/value pair reference by the handle.
Swap(GeoHashMap &)	Swap places with another table.

Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::~GeoHashMap

public: ~GeoHashMap()

Delete.

This will erase everything from the table.

Warning

Invalidates all existing handles.

static u32 Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::CalcMemoryUsage

public: u32 CalcMemoryUsage
(
u32 capacity
)

Gets the amount of memory (in bytes) required by a GeoHashMap with the given capacity.

This is the size of the memory block which must be passed to the appropriate GeoHashMap constructor.

void Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::Clear

public: void Clear()

Clears the table.

Warning

Invalidates all existing handles.

bool Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::Exists

public: bool Exists
(
KeyParamType key
) const

This returns true if the key exists.

Note

If you intend to access the value if it does exist it's more efficient to use Find().

Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::GeoHashMap

public: GeoHashMap
(
u32 capacity,
float loadLimit,
HashFunctor h,
KeyCompareFunctor cmp
)

Construct a hash table.

The last two parameters are optional and you won't need to specify them unless you are using a non-default hash or key compare functor that needs to be constructed with something other than the default constructor.

Parameters

[in]	capacity	This is the minimum size of the table.
[in]	loadLimit	The load factor at which the table will grow (recommended value: 0.5. Specifying zero disables growth)
[in]	h	The hashing function (can be ignored)
[in]	cmp	The key comparison function (can be ignored)

Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::GeoHashMap

public: GeoHashMap
(
void * memory,
u32 capacity,
HashFunctor h,
KeyCompareFunctor cmp
)

Construct a hash table using the given block of memory for storage. The given block must be at least the size returned by CalcMemoryUsage() and be 4-byte aligned.

Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::GeoHashMap

public: GeoHashMap
(
const GeoHashMap & rhs
)

Copy-constructor.

Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::GeoHashMap

public: GeoHashMap
(
GeoHashMap && rhs
)

Move constructor.

GeoHashMap& Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::operator=

public: GeoHashMap & operator=
(
const GeoHashMap & rhs
)

Assignment operator.

Warning

Invalidates all existing handles.

GeoHashMap& Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::operator=

public: GeoHashMap & operator=
(
GeoHashMap && rhs
)

Move assignment operator.

Warning

Invalidates all existing handles.

bool Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::Remove

public: bool Remove
(
KeyParamType key
)

Removes the key/value pair indexed by this key.

Returns

Returns true if the key was found and removed, otherwise false if the key doesn't exist.

Warning

Invalidates all existing handles.

void Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::Remove

public: void Remove
(
Handle h
)

Removes the key/value pair reference by the handle.

Warning

Invalidates all existing handles.

void Geo::GeoHashMap< tKey, tValue, tHashFunctor, tKeyCmp >::Swap

public: void Swap
(
GeoHashMap & other
)

Swap places with another table.

Warning

Invalidates all existing handles.

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