poco/Foundation/include/Poco/HashFunction.h
Matej Kenda f24547cdcf enh(Poco): Mark deprecated functionality with C++ attributes and resolve internal usage of deprecated functions (#4551)
* enh(poco): Replace deprecated comments with C++ deprecated attribute.

* enh(Poco): Replace some deprecated functionality in Poco sources. (#4426)

* enh(Poco): Replace more deprecated functionality in Poco sources. (#4426)

* fix(CMake): Variable BUILD_SHARED_LIBS must be defined properly to create valid binaries.

* enh: Code improvements done while resolving deprecated functionality (#4426)

* Un-deprecate LocalDateTme (#4426)

* enh(Poco): Replace usage of deprecated functionality with other functions/classes (#4426)

* chore(SSL): temporarily un-deprecate SSL-related functionality (#4426)

* chore(SSL): temporarily un-deprecate old MongoDB protocol functionality (#4426)

* enh(Poco): Minor Hash improvements (#4426)

* enh(Foundation): Compile deprecated hash tests only when POCO_TEST_DEPRECATED is enabled (#4426)

* enh(Net): Compile deprecated Socket::select functionality only when POCO_TEST_DEPRECATED is enabled (#4426)

* enh(Bonjour): Replace deprecated Socket::select with PollSet (#4426)

* enh(Poco): Introduce POCO_DEPRECATED macro to have the ability to disable deprecation warnings in applications (#4426)

* test(ODBC): add few asserts to testStoredProcedureDynamicVar

* fix(ODBC): rename DynamicAny -> DynamicVar in tests

* fix(ODBC): make Dignostics static members inline to prevent explicit instantiation warnings on windows

---------

Co-authored-by: Alex Fabijanic <alex@pocoproject.org>
2024-07-29 08:37:35 +02:00

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//
// HashFunction.h
//
// Library: Foundation
// Package: Hashing
// Module: HashFunction
//
// Definition of the HashFunction class.
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_HashFunction_INCLUDED
#define Foundation_HashFunction_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Hash.h"
namespace Poco {
template <class T>
struct POCO_DEPRECATED("use Hash") HashFunction
/// A generic hash function.
{
UInt32 operator () (T key, UInt32 maxValue) const
/// Returns the hash value for the given key.
{
return static_cast<UInt32>(Poco::hash(key)) % maxValue;
}
};
template <>
struct POCO_DEPRECATED("use Hash") HashFunction<std::string>
/// A generic hash function.
{
UInt32 operator () (const std::string& key, UInt32 maxValue) const
/// Returns the hash value for the given key.
{
return static_cast<UInt32>(Poco::hash(key)) % maxValue;
}
};
} // namespace Poco
#endif // Foundation_HashFunctions_INCLUDED