C# Essentials, 2nd Edition

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O

 object class

 FCL-friendly types

 object type , 2nd

 COM default datatype mapping

 core types and

 inheriting

 Object( ) method

 Obsolete attribute

 compiling custom attributes

 one-stop coding (C# language feature)

 operator keyword

operators

 enums and

 implicit/explicit conversions and

 math-oriented programming and

 three-state logic

 value equality, implementing

 Out attribute

 out modifier , 2nd  , 3rd

 overloadable operators

 overloading methods

 override keyword