find_first_of     871 modules/core/include/opencv2/core/cvstd.hpp size_t String::find_first_of(const char* s, size_t pos, size_t n) const
find_first_of     885 modules/core/include/opencv2/core/cvstd.hpp size_t String::find_first_of(char c, size_t pos) const
find_first_of     891 modules/core/include/opencv2/core/cvstd.hpp size_t String::find_first_of(const String& str, size_t pos) const
find_first_of     897 modules/core/include/opencv2/core/cvstd.hpp size_t String::find_first_of(const char* s, size_t pos) const