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User Defined Literals
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Deomstrating use of user defined literals with | |
a "memory buffer" as an example. |
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/* Copyright 2020 G Davey | |
Permission is hereby granted, free of charge, to any person obtaining a copy of | |
this software and associated documentation files (the "Software"), to deal in | |
the Software without restriction, including without limitation the rights to | |
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
the Software, and to permit persons to whom the Software is furnished to do so, | |
subject to the following conditions: | |
The above copyright notice and this permission notice shall be included in all | |
copies or substantial portions of the Software. | |
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
*/ | |
#include <array> | |
#include <cassert> | |
#include <cstddef> | |
namespace memory { | |
template <std::size_t Size> | |
using buffer_of = std::array<std::uint8_t, Size>; | |
namespace memory_literals { | |
constexpr auto operator "" _kib( | |
unsigned long long value) { | |
return value * 1024; | |
} | |
} // namespace memory_literals | |
} // namespace memory | |
auto main() -> int | |
{ | |
using namespace memory::memory_literals; | |
auto buffer = memory::buffer_of<256_kib>{}; | |
assert(buffer.size() == 262144); | |
} | |
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