DataHash< T, H, B > Struct Template Reference

#include <evo/impl/container.h>

Inheritance diagram for DataHash< T, H, B >:

Detailed Description

template<class T, class H = SpookyHash, bool B = IsPodType<T>::value>
struct evo::DataHash< T, H, B >

Optimized data hash helpers.

• Operations are specialized and optimized for POD types
• This is used by Evo items and containers

Template Parameters

T	Data type to use
H	Hashing class to use for POD data, ignored with non-POD types
B	Inferred from T

Public Types
typedef H	HashType
	Hash class type More...
typedef RemoveConst< T >::Type	Item
	Item type (const removed) More...

Static Public Member Functions
static ulong	hash (const T *data, ulong size, ulong seed=0)
	Compute hash value from data. More...
static ulong	hash (const T &data, ulong seed=0)
	Compute hash value from data. More...

Member Typedef Documentation

HashType

typedef H HashType

Hash class type

Item

typedef RemoveConst<T>::Type Item

inherited

Item type (const removed)

Member Function Documentation

hash() [1/2]

static ulong hash ( const T *  data, ulong  size, ulong  seed = 0  )

inlinestatic

Compute hash value from data.

• This uses T::hash() method to chain-hash each item, for POD types this uses H::hash() on the whole array

Parameters

data	Data to use
size	Data size as item count
seed	Seed value for chaining from a previous hash, 0 if none

Returns

Hash value

hash() [2/2]

static ulong hash ( const T &  data, ulong  seed = 0  )

inlinestatic

Compute hash value from data.

• This uses T::hash() method, for POD types this uses H::hash()

Parameters

data	Data to use
seed	Seed value for chaining from a previous hash, 0 if none

Returns

Hash value

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

• evo/impl/container.h