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Extension 12: Variable Scope
You can control a variable’s scope, or from where in your program it is accessible. Language Directives Up until now, we have seen that instance methods can access instance variables—a class can access...
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Floating in Uncertainty
Among the primitive data types that Objective-C offers are float and double. Similar to long, double is simply double the storage in bits of float. However, as the name suggests, both are...
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