GenericHasher< T, PointerToMember > Struct Template Reference

#include <ImFusion/Core/Hashing.h>

STL-compatible hasher for custom classes where you list the members to be hashed as template parameters. More...

Detailed Description

template<typename T, auto... PointerToMember>
struct ImFusion::Hashing::GenericHasher< T, PointerToMember >

STL-compatible hasher for custom classes where you list the members to be hashed as template parameters.

Internally uses combineHash() on all members of the class that are defined through pointer-to-members in the template parameter pack.

Template Parameters

T	Type of the struct/class to be hashed.
PointerToMember	List of pointer-to-member declarations of members of T that should be hashed. The corresponding types must be hashable with std::hash<>.

Example usage:

struct Foo
{
    int i = 0;
    double d = 0.0;
    std::string s;
 
    bool operator==(const Foo& rhs) const { ... }
};
std::unordered_map<Foo, int, GenericHasher<Foo, &Foo::i, &Foo::d, &Foo::s>> hashMap;
hashMap.insert({Foo{42, 13.37, "Hello"}, 22});

See also

genericHash()

Public Member Functions
std::size_t	operator() (const T &t) const

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

• ImFusion/Core/Hashing.h