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iphoneipadnsfilehandle

Difference between -fileHandleForWritingAtPath: and fileHandleForUpdatingAtPath:?

For me it sounds like the same thing. Updating a file implies to write to the file. Writing to a file is also an update for me. But I guess there's a subtle difference ;-)

Does anyone know?

Solution

  • fileHandleForWritingAtPath: returns an object that responds only to writeData:.

    fileHandleForUpdatingAtPath: responds to both NSFileHandle read... messages and writeData:.