smats::InvocableHashAlgorithm Concept Reference

#include <concepts.h>

Concept definition

template<class T>
concept smats::InvocableHashAlgorithm =  requires(T t, const void* data, size_t length) {
  typename T::result_type;
  { t(data, length) } noexcept -> std::same_as<void>;
  { size_t() } noexcept -> std::same_as<typename T::result_type>;
}

Detailed Description

Check if the type T supports the same operation one could expect a typical hash algorithm to support:

• a result_type alias that defines the type of the hash value

• void operator()(const void*, size_t) noexcept 

  applies the hash function to the data and append the result to the hash

• operator result_type () noexcept 

  returns the current hash value when casted to the result type

  Template Parameters

  T	type to check