Here is a list of all documented namespace members with links to the namespaces they belong to:

### - o -

- oct() : std
- ofstream : std
- operator!=() : std , __gnu_cxx , std , __gnu_cxx , std , std::rel_ops , std
- operator&() : std
- operator*() : std
- operator+() : std , __gnu_cxx
- operator-() : std
- operator/() : std
- operator<() : std , __gnu_parallel , __gnu_cxx
- operator<<() : std
- operator<=() : std , __gnu_parallel , std , std::rel_ops , std , __gnu_parallel , __gnu_cxx , std , __gnu_cxx , std
- operator==() : std , __gnu_cxx , std , __gnu_cxx , std , __gnu_cxx , std , __gnu_cxx , std
- operator>() : std , __gnu_cxx , std , __gnu_cxx , std , std::rel_ops , std , __gnu_cxx , std
- operator>=() : std , __gnu_cxx , std , std::rel_ops , std , __gnu_cxx , std , __gnu_cxx , std
- operator>>() : std
- operator^() : std
- operator|() : std
- optimize : std::regex_constants
- ostream : std
- ostringstream : std