Amr Zaki Crspy

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Crspy / constexpr_to_string.cpp

Last active November 18, 2020 14:32

C++11 constexpr numbers (any base) to string (array of chars) conversion also supports prefixes

	#include <cstdio>
	#include <cstdint>
	#include <type_traits>


	namespace fast
	{
	namespace detail
	{
	constexpr auto numbers = "0123456789ABCDEF";

Crspy / concat_strings.cpp

Last active November 20, 2025 11:21

C++17 constexpr strings concatenation

	#include <type_traits>
	#include <array>
	#include <iostream>

	template<typename first, typename... rest>
	constexpr auto all_same_v = std::conjunction_v<std::is_same<first, rest>...>;

	template <typename... Ts>
	constexpr auto concat_strings(Ts&&... args) {

Crspy / TReg.cpp

Last active July 26, 2020 13:13

C++11 templatized constexpr register wrapper class

	#include <stddef.h> // this is all we need


	namespace reg_wrapper
	{
	namespace detail
	{
	template <class T, T v>
	struct integral_constant
	{

Crspy / FindProcessInfo.cpp

Created June 16, 2020 20:34

Find Process Handle & BaseAdresss

	struct ProcessInfo {
	HANDLE handle;
	HMODULE baseAddress;
	};


	ProcessInfo FindProcessHandle(const TCHAR* targetProcName)
	{
	DWORD aProcesses[1024], bytesNeeded;

Crspy / LongestSubSeq.cpp

Last active May 22, 2019 23:05

Find longest common sub sequence in two strings.

	#include <string>

	std::string LongestSubSeq(std::string s1, std::string s2)
	{
	// space complexity O(2 *LengthOfLongestString)
	// time Complexity O(s1Length*s2Length)
	size_t Len = s1.length() > s2.length() ? s1.length() : s2.length();
	std::string result,temp;
	result.reserve(Len);
	temp.reserve(Len);