- o -

• obufstream() : obufstream
• ofstream() : ofstream
• open() : FatFile , FatFileSystem , fstream , ifstream , ofstream
• openNext() : FatFile
• openNextFile() : File
• openRoot() : FatFile
• operator bool() : DigitalPin< PinNumber > , File
• operator const void *() : ios
• operator!() : ios
• operator<<() : ostream
• operator=() : DigitalPin< PinNumber >
• operator>>() : istream