Declaration of variables in different locations in Objective-C

This content has 6 years. Please, read this page keeping its age in your mind.Having worked with Objective-C you will have noticed that there are many different locations to declare instance variables and local variables. In this article, we are going to explore the different possibilities and the meaning of each case. Lets start with

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In objective-c we declare only as property without instance variable?

This content has 10 years. Please, read this page keeping its age in your mind.I’m reading about core data and I noticed (again) in application delegate file: where the we have only the decleration of properties without the instance variables. By googling around I found that: In Objective-C 2.0 on either of the modern runtimes

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