? Getting Started - About OC

Today I see this in the book, we all think, oh

Examples of methods can always access its instance variables directly. However, class methods can not, because it deals only with any instance of the class itself, does not deal with the class.



Reply:
1, class methods class variables are static methods, static methods and static variables can be seen as global.
2, examples of methods and instance variables can be regarded as out of the new class object is local.

Rules:
1, you can call the overall global
2, can be called a local partial
3, you can call the local global
4, a global not directly call local
5, instance methods and instance variables can only be referenced by the object, and class methods and class variables can be referenced by the class name or object.
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Object-oriented

C # static methods and instance methods inside
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I feel like a top company and employee relations, staff know what their stuff that they have, and the company on top really do not know what specific things the staff here is top class company, and the employees are examples of what employees are instance variables!
Reply:
It is an object-oriented concepts, not oc-specific.
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Which is seen in the OC,,,,
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Bangding one! ! !