cpp-is-magic/examples/example_1.cpp at main · MatthieuHernandez/cpp-is-magic · GitHub

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#include <array>

#include <string_view>

template <typename CT, size_t S>

class Tensor {

using T = typename std::remove_const<CT>::type;

public:

constexpr Tensor(const CT* data = nullptr) {

if (data != nullptr) {

for (size_t i = 0; i < S; ++i) {

this->data[i] = data[i];

}

consteval const T* get_data() const { return data; }

static consteval size_t size() { return S; }

template <typename T2, size_t S2>

constexpr auto operator+(const Tensor<T2, S2>& other) const {

static_assert(S == S2, "Tensors must be the same size to be added.");

std::array<T, S> sum{};

for (size_t i = 0; i < this->size(); ++i) {

sum[i] = this->data[i] + other.get_data()[i];

}

return Tensor<T, S>(sum.data());

}

consteval std::string_view dump() const { return std::string_view(data, S - 1); }

private:

T data[S] = {};

};

template <typename CT, size_t S>

Tensor(const CT (&)[S]) -> Tensor<CT, S>;

int main() {

constexpr char encrypted_message[] = "Hello world!";

constexpr int decryption_key[] = {-5, -58, -65, -76, -6, 83, -87, -2, -17, -5, 5, 66, 0};

constexpr auto tensor_1 = Tensor(encrypted_message);

constexpr auto tensor_2 = Tensor(decryption_key);

constexpr auto tensor_3 = tensor_1 + tensor_2;

static_assert(tensor_3.dump() == "C++ is magic");

return 0;

}

cpp-is-magic/examples/example_1.cpp at main · MatthieuHernandez/cpp-is-magic · GitHub

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