2 replaced http://stackoverflow.com/ with https://stackoverflow.com/
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This is the pattern that is often used to address the lack of abstract classes in Objective C.

It is very common for the missing method stubs of the base implementation to raise an exception, to make sure that you catch incomplete implementations. See this answer on stack overflowthis answer on stack overflow for details of how it is commonly done.

This is the pattern that is often used to address the lack of abstract classes in Objective C.

It is very common for the missing method stubs of the base implementation to raise an exception, to make sure that you catch incomplete implementations. See this answer on stack overflow for details of how it is commonly done.

This is the pattern that is often used to address the lack of abstract classes in Objective C.

It is very common for the missing method stubs of the base implementation to raise an exception, to make sure that you catch incomplete implementations. See this answer on stack overflow for details of how it is commonly done.

1
source | link

This is the pattern that is often used to address the lack of abstract classes in Objective C.

It is very common for the missing method stubs of the base implementation to raise an exception, to make sure that you catch incomplete implementations. See this answer on stack overflow for details of how it is commonly done.