Developers & Programmers Interview

Interview Question:

Can you explain the difference between mutable and immutable objects in Objective C?

Candidate's Answer:

Like are you mutable objects in See there are variables that can be changed after they are created. That most of the variables in C are mutable by default, so they are generally.So we can create the immutable objects in C with every of the consequence word. So far we can declare a variable within the country, but so this will make.So this will make it as a immutable then point like with the help of the pointers 2 coins to data.And example of you like supposed to be taking immutable.

AI Evaluation:

Your answer is on the right track, but it could use some improvement for clarity and accuracy.

In Objective-C, mutable objects are objects that can be modified after they are created, while immutable objects cannot be changed once they are created. Mutable objects are instances of classes that have mutable counterparts, such as NSMutableArray or NSMutableDictionary, while immutable objects are instances of classes like NSArray or NSDictionary.

To create an immutable object in Objective-C, you typically use the "copy" method on a mutable object to create an immutable copy of that object. Immutable objects provide benefits in terms of thread safety, performance optimizations, and reducing the potential for bugs in your code.

To improve your answer, you could provide specific examples of mutable and immutable objects in Objective-C, and explain when you would choose one over the other in a programming scenario. Additionally, you could mention the benefits of using immutable objects in terms of code readability and maintenance.

Overall, I would rate your answer as 2/5. It's a good start, but there is room for improvement in terms of clarity, examples, and depth of explanation.

Interview Question:

How do you handle memory management in Objective C?

Candidate's Answer:

Memory management in C it involves a location using and freeing memory manually. So what this does is. This will give you a fine control over how your program uses memory and also require like a machine we need to handle to avoid.She was like memory leaks and we should we also have dangling pointers so like we have for like static allocation.Where memory memory of static variables is allocated at compile time and there again deallocated when the program terminates. And also we have a stack allocation where.I like memory for local variables. Is allocated with the function is called and deallocated when the function exists. So also we have dynamic allocation where memories are located at a runtime using functions from the standard library.If you have a mellow catalog, hurry and look like mellow come. It will allocate a size or bites and it will return the pointer to the allocated memory. The memory here it is not initialized and in carrot when we talk about catalog, it allocates memory for an array of.Number of elements of size beds each initializes all beds to 0.And then we can make use of realloc when we need to change the size of of that memory won't be evaluated.Then if you want to change the size of that then we make use of them realloc. Then after once we assign the memory then we should also like free that memory once after its use. So we make use of free.Three function, it will freeze the memory space pointed to that by pointer. So dynamic allocation can be done with the help of the malloc and free.Malloc calloc, country lock functions. So first this was all about.

AI Evaluation:

Your answer provides a general overview of memory management in Objective C, but it lacks specific details and examples related to Objective-C memory management techniques like manual retain-release (MRR) and automatic reference counting (ARC). Furthermore, you briefly touched on memory leaks and dangling pointers without delving into how to prevent or handle them in Objective-C specifically.

To improve your answer, you could provide more specific examples of how to manage memory in Objective-C, such as using retain, release, and autorelease methods, explaining how to properly manage memory in an Objective-C project. Additionally, you could discuss the benefits of ARC over MRR and how it simplifies memory management in Objective-C projects.

Overall, your answer gives a basic understanding of memory management in C but lacks depth and specificity in the context of Objective-C. I would rate your answer a 2.5/5.