一般来说,在处理字符串的时候通常会用到如下一些函数/方法:length、substring、find、charAt、toLowerCase、toUpperCase、trim、equalsIgnoreCase、startsWith、endsWith、parseInt、toString、split等。 如果使用STL中的std::string,它已经提供了如下一些比较有用的方法: length(),取得字符串的长度。 substr(),从字符串中...
(12)string_view 和 string 的共同点 at、[]、substr、data、begin、end find、rfind、find_first_of、find_last_of find_first_not_of、find_last_not_of front、back、starts_with、ends_with compare、==、!=、<、>、<=、>= 1. 2. 3. 4. 5. 这些函数和 string 的都是一样的,并且其中 substr ...
startwith, endwith bool startwith = s.compare(0, head.size(), head) == 0; bool endwith = s.compare(s.size() - tail.size(), tail.size(), tail) == 0; --- toint, todouble, tobool... atoi(s.c_str()); stringstream(s) >> ii; atof(sd.c_str()); ---...
STL 算法：[cpp]view plaincopy 1. #include <iostream> 2. #include <algorithm> 3. using namespace std;4.5. int main()6. { 7. string str = "heLLo";8.9. transform(str.begin(), str.end(), str.begin(), toupper);10. cout<<str.c_str()<<endl;11.12. transform(str...
#include <iostream> #include <string> static bool starts_with(const std::string str, const std::string prefix) { return ((prefix.size() <= str.size()) && std::equal(prefix.begin(), prefix.end(), str.begin())); } int main(int argc, char* argv[]) { bool usage = false; unsi...
basic_string::endbasic_string::cend (C++11) basic_string::rbeginbasic_string::crbegin (C++11) basic_string::rendbasic_string::crend (C++11) Capacity basic_string::empty basic_string::sizebasic_string::length basic_string::max_size basic_string::reserve basic_string::capacity basic_string::...
//std::string的⼤⼩写转换 transform(strA.begin(), strA.end(), strA.begin(), ::toupper); transform(strA.begin(), strA.end(), strA.begin(), ::tolower); } 计算std:string的字节长度 计算std:string的字节长度 如果项⽬本⾝是使⽤ Unicode 字符集和utf8编码,std::string的length(),...
Similarly, it would be possible to use rfind in almost the exact same way, except that searching would begin at the very end of the string, rather than the beginning. (String matches would still be from left-to-right--that is, it wouldn't match "cat" with a string containing "tac"....
#include <cassert> #include <string_view> int main() { using namespace std::literals; assert ("" // (1) ends_with( basic_string_view sv ) && std::string_view("https://cppreference.com").ends_with(".com"sv) == true && std::string_view("https://cppreference.com").ends_with...
for (it=result.begin();it!=result.end();it++) { std::cout << *it << std::endl; } } 改成通用的模版很容易,有了下午的经验,哥把函数的第一行秒改成: template<typename T, template<typename, typename=std::allocator<T>> class Container> ...