iOS Dev 35 has an arc memory management mechanism, do you need to worry about memory overflow, and so on? --Interview Essentials

Answer: You have to worry, arc is not omnipotent.

This is mainly related to the data type of the collection class.

For example, an array, we define a mutable array muarr1, and then add an object P1 to Muarr1, this object retain once, the equivalent of retaincount+1, only when the array removeobject:p1 Delete this object, Or the array itself muarr1=nil, or if the array removeallobjects, it will release the object or all of its objects once.

iOS Dev 35 has an arc memory management mechanism, do you need to worry about memory overflow, and so on? --Interview Essentials