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nikhedonia / TypeErasure.cpp
Last active August 18, 2016 15:11
Gist created by https://fiddle.jyt.io
// Type Erasure
// https://channel9.msdn.com/Events/GoingNative/2013/Inheritance-Is-The-Base-Class-of-Evil
// https://akrzemi1.wordpress.com/2013/11/18/type-erasure-part-i/
#include<memory>
#include<iostream>
struct Printable {
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nikhedonia / stackoverflow-39080475-compilation-error-in-array-of-strings.cpp
Created August 22, 2016 14:00
Gist created by https://fiddle.jyt.io
#include<iostream>
#include<vector>
#include<string>
#include<set>
auto numberOfUniqueChars(std::string const& str) {
std::set<char> s;
for(auto c : str) {
s.insert(c);
}
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nikhedonia / stackoverflow-39080189-use-stdvector-for-dynamically-allocated-2d-array.cpp
Created August 22, 2016 14:51
Gist created by https://fiddle.jyt.io
#include<vector>
#include<iostream>
template<class T>
struct Matrix {
Matrix(std::size_t n=1, std::size_t m=1)
: n{n}, m{m}, data(n*m)
{}
Matrix(std::size_t n, std::size_t m, std::vector<T> const& data)
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nikhedonia / stackoverflow.com-7943525-is-it-possible-to-figure-out-the-parameter-type-and-return-type-of-a-lambda.cpp
Created August 27, 2016 15:38
Gist created by https://fiddle.jyt.io
#include<functional>
template<class T>
struct AsFunction
: public AsFunction<decltype(&T::operator())>
{};
template<class ReturnType, class... Args>
struct AsFunction<ReturnType(Args...)> {
using type = std::function<ReturnType(Args...)>;
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nikhedonia / stackoverflow-questions-39173519-template-type-deduction-with-stdfunction.cpp
Created August 27, 2016 15:40
Gist created by https://fiddle.jyt.io
#include<functional>
template<class T>
struct AsFunction
: public AsFunction<decltype(&T::operator())>
{};
template<class ReturnType, class... Args>
struct AsFunction<ReturnType(Args...)> {
using type = std::function<ReturnType(Args...)>;
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nikhedonia / Duals.cpp
Created February 23, 2017 20:01
example showing the beauty of duals
// Example program
#include <iostream>
#include <string>
struct Dual {
float real;
float img;
Dual(float x, float y=0)
:real{x}, img{y}
@nikhedonia
nikhedonia / EitherAsmAnalysis.cpp
Created May 16, 2017 11:39
analysing Assembly generated by Eithers
#include <type_traits>
template<class L>
struct Left {
L const value;
};
template<class R>
struct Right {
R const value;
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nikhedonia / shared_ptr_example.cpp
Last active May 26, 2017 11:51 — forked from njlr/shared_ptr_example.cpp
struct Texture {
  Texture(string const& path) { cout << "Texture loaded from " << path << endl; }
 ~Texture() { cout<< "Texture destroyed" << endl; }
 
  static shared_ptr<Texture> load(string const& path) {
  return make_shared<Texture>(path)
  }
};
// this functions will take a copy and increment the counter
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nikhedonia / template_compile_benchmark_vector.cpp
Created June 2, 2017 16:50
template<int D>
struct Vector {
static constexpr unsigned N = D;
int data[N];
Vector (Vector<D> const& v) {
for(int i=0; i<N ; ++i) {
data[i] = v[i];
}
}
@nikhedonia
nikhedonia / boilerplate_compile_benchmark.cpp
Created June 2, 2017 16:53
#define CREATE_VECTOR(D) \
struct Vector_##D {\
static constexpr int N = D;\
int data[N];\
\
Vector_##D (Vector_##D const& v) {\
for(int i=0; i<N ; ++i) {\
data[i] = v[i];\
}\