C++正則表達式筆記之wregex
阿新 • • 發佈:2019-02-27
tor out mat 遍歷 earch span 正則表達 urn 索引
遍歷所有匹配
#include <iostream> #include <regex> using namespace std; int main() { wstring wstr = L"我是1994年出生的,我今年25歲了。"; wsmatch wsm; wregex wre(L"[0-9]+"); wsregex_iterator itr1(wstr.begin(), wstr.end(), wre); wsregex_iterator itr2; for (wsregex_iterator itr = itr1; itr != itr2; ++itr) { wcout<< itr->str() << endl; } return 0; }
在目標文本中進行搜索
#include <iostream> #include <regex> using namespace std; int main() { wstring text = L"百度搜索引擎https://www.baidu.com/^_^"; wsmatch wsm; wregex wre(L"https?://(.+?)/"); if (regex_search(text, wsm, wre)) { wcout<< wsm.str(1) << endl; } const wchar_t *str = L"百度搜索引擎https://www.baidu.com/^_^"; wcmatch wcm; if (regex_search(str, wcm, wre)) { wcout << wsm[1] << endl; } return 0; }
完全匹配
#include <iostream> #include <regex> usingnamespace std; int main() { std::wstring text = L"long long ago"; std::wstring text2 = L"long long"; wregex wre(L".+ng"); wcout << boolalpha << regex_match(text, wre) << endl; wcout << regex_match(text2, wre) << endl; return 0; }
C++正則表達式筆記之wregex