73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
#ifndef TOOLKIT_H
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#define TOOLKIT_H
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#include <charconv>
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#include <cstring>
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#include <expected>
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#include <type_traits>
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#include <string>
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#include <cstdlib>
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#include <ios>
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//use for to_chars
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constexpr size_t buffer_size = 32;
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template <typename T>
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concept _num_type = requires {
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std::is_same_v<T, int> ||
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std::is_same_v<T, float> ||
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std::is_same_v<T, long> ||
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std::is_same_v<T, double>;
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};
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namespace toolkit{
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template<typename T>
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std::expected<std::string, std::string> to_string(T value){
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if constexpr (std::is_same_v<T, int> || std::is_same_v<T, float> || std::is_same_v<T, double>){
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char buffer[buffer_size];
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auto res = std::to_chars(buffer, buffer + buffer_size, value);
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if (res.ec != std::errc()) {
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return std::unexpected(std::make_error_code(res.ec).message());
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}
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return std::string(buffer, res.ptr - buffer);
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} else if constexpr (std::is_same_v<typename std::remove_const<T>::type,
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char *>) {
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return std::to_string(value);
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}
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}
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template<typename T = double>// requires std::is_same_v<T, std::string>
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std::expected<T, std::string> stoi(const std::string& str){
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T value;
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auto res = std::from_chars(str.c_str(), str.c_str() + str.size(), value);
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if(res.ec != std::errc()){
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return std::unexpected(std::make_error_code(res.ec).message());
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}
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return value;
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}
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template <typename T>
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requires std::is_same_v<std::string, T> || std::is_same_v<const char*, T>
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std::string replace_string(const std::string& str, T d, T e){
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std::string result = str;
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if(d == e){
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return result;
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}
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size_t len = 0;
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while(true){
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auto pos = result.find_first_of(d);
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if(pos == std::string::npos){
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return result;
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}
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if constexpr(std::is_same_v<T, const char*>){
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len = std::strlen(d);
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}else{
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len = d.length();
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}
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result = result.replace(pos, len ,e);
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}
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}
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}
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#endif
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