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- #pragma once
- #include <algorithm>
- #include <cassert>
- #include <deque>
- #include <iostream>
- #include <sstream>
- #include <iterator>
- #include <string>
- #include <vector>
- namespace Utils {
- using namespace std::literals::string_literals;
- template <typename E>
- constexpr typename std::underlying_type<E>::type to_underlying(E e) noexcept {
- return static_cast<typename std::underlying_type<E>::type>(e);
- }
- template <typename T>
- static constexpr T wrap(T val, T min, T max) {
- return (val > max) ? min : (val < min) ? max : val;
- }
- static std::vector<std::string> split(const std::string& s, const char delimiter = ' ') {
- std::vector<std::string> tokens;
- std::string token;
- std::istringstream tokenStream(s);
- while (std::getline(tokenStream, token, delimiter)) {
- tokens.push_back(token);
- }
- return tokens;
- }
- static constexpr std::string_view WHITEPACE{" \t\n\r\f\v"};
- static inline void rtrim(std::string& s, std::string_view t = WHITEPACE) {
- s.erase(s.find_last_not_of(t) + 1);
- }
- static inline void ltrim(std::string& s, std::string_view t = WHITEPACE) {
- s.erase(0, s.find_first_not_of(t));
- }
- static inline void trim(std::string& s, std::string_view t = WHITEPACE) {
- rtrim(s, t);
- ltrim(s, t);
- }
- template <typename T>
- static constexpr T clamp(T val, T min, T max) noexcept {
- return val < min ? min : val > max ? max : val;
- }
- template <class Container>
- static void sort(Container& c) {
- std::sort(std::begin(c), std::end(c));
- }
- template <class Container>
- static typename Container::iterator find(const Container& c, const typename Container::value_type& value) {
- return std::find(std::begin(c), std::end(c), value);
- }
- template <class Container>
- static typename Container::const_iterator find(const Container& c, const typename Container::value_type& value) {
- return std::find(std::begin(c), std::end(c), value);
- }
- template <class Container, typename Predicate>
- static typename Container::iterator find_if(const Container& c, Predicate pred) {
- return std::find_if(std::begin(c), std::end(c), pred);
- }
- template <typename T>
- static void quick_remove_at(std::vector<T>& v, std::size_t i) {
- assert(i < v.size());
- v[i] = std::move(v.back());
- v.pop_back();
- }
- template <typename T>
- static void quick_remove_at(std::vector<T>& v, typename std::vector<T>::iterator it) {
- assert(it != std::end(v));
- *it = std::move(v.back());
- v.pop_back();
- }
- template <class Container>
- static void insert_sorted(Container& v, const typename Container::value_type& item) {
- assert(true == std::is_sorted(begin(v), end(v)));
- const auto insert_pos(std::lower_bound(std::begin(v), std::end(v), item));
- v.insert(insert_pos, item);
- }
- template <class Container>
- static void print(const Container &v, const std::string& sep = ", "s) {
- using T = typename Container::value_type;
- std::copy(std::begin(v), std::end(v), std::ostream_iterator<T>{std::cout, sep});
- }
- template <class AssociativeContainer>
- static void print_map(const AssociativeContainer &map, const std::string& sep = "\n"s) {
- for (auto& elem : map) {
- std::cout << elem.first << ": " << elem.second << sep;
- }
- }
- //removing from sequence containers
- template <class T>
- static void remove(std::vector<T>& vector, T const& value) {
- vector.erase(std::remove(std::begin(vector), std::end(vector), value), std::end(vector));
- }
- template <class T>
- static void remove(std::deque<T>& deque, T const& value) {
- deque.erase(std::remove(std::begin(deque), std::end(deque), value), std::end(deque));
- }
- static void remove(std::string& string, char letter) {
- string.erase(std::remove(std::begin(string), std::end(string), letter), std::end(string));
- }
- template <class AssociativeContainer, class T>
- static void remove(AssociativeContainer& c, const T& key) {
- c.erase(key);
- }
- //filtered remove from sequence containers
- template <class T, typename Predicate>
- static void remove_if(std::vector<T>& vector, Predicate pred) {
- vector.erase(std::remove_if(std::begin(vector), std::end(vector), pred), std::end(vector));
- }
- template <class T, typename Predicate>
- static void remove_if(std::deque<T>& deque, Predicate pred) {
- deque.erase(std::remove_if(std::begin(deque), std::end(deque), pred), std::end(deque));
- }
- template <class Predicate>
- static void remove_if(std::string& string, Predicate pred) {
- string.erase(std::remove_if(std::begin(string), std::end(string), pred), std::end(string));
- }
- template <class AssociativeContainer, class Predicate>
- static void remove_if(AssociativeContainer& c, Predicate pred) {
- auto i = std::begin(c);
- const auto last = std::end(c);
- while ((i = std::find_if(i, last, pred)) != last) {
- i = c.erase(i);
- }
- }
- //remove duplicates from sequence containers
- template <class T>
- static void unique(std::vector<T>& vector) {
- vector.erase(std::unique(std::begin(vector), std::end(vector)), std::end(vector));
- }
- template <class T>
- static void unique(std::deque<T>& deque) {
- deque.erase(std::unique(std::begin(deque), std::end(deque)), std::end(deque));
- }
- static void unique(std::string& string) {
- string.erase(std::unique(std::begin(string), std::end(string)), std::end(string));
- }
- }
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