objective-c Archives - Page 2 of 11

objective-c, Programming

IT Nursery

What are the new documentation commands available in Xcode 5? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, ...

June 1, 2022
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objective-c, Programming

IT Nursery

Best way to remove from NSMutableArray while iterating?

In Cocoa, if I want to loop through an NSMutableArray and remove multiple objects that fit a certain criteria, what’s the best way ...

June 1, 2022
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objective-c, Programming

IT Nursery

Why is @autoreleasepool still needed with ARC?

For the most part with ARC (Automatic Reference Counting), we don’t need to think about memory management at all with Objective-C objects. It ...

May 31, 2022
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objective-c, Programming

IT Nursery

Xcode build failure “Undefined symbols for architecture x86_64”

An Xcode beginner’s question: It is my first experience with Xcode 4.6.3. I am trying to write a very simple console program, that ...

May 31, 2022
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objective-c, Programming

IT Nursery

Check that an email address is valid on iOS [duplicate]

This question already has answers here: Closed 9 years ago. Possible Duplicate: Best practices for validating email address in Objective-C on iOS 2.0? ...

May 31, 2022
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objective-c, Programming

IT Nursery

iOS – Build fails with CocoaPods cannot find header files

I have an iOS project using CocoaPods. Everything was working smoothly until another developer started to work on the same project. He made ...

May 30, 2022
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objective-c, Programming

IT Nursery

How does @synchronized lock/unlock in Objective-C?

Does @synchronized not use “lock” and “unlock” to achieve mutual exclusion? How does it do lock/unlock then? The output of the following program ...

May 30, 2022
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objective-c, Programming

IT Nursery

How does the new automatic reference counting mechanism work?

Can someone briefly explain to me how ARC works? I know it’s different from Garbage Collection, but I was just wondering exactly how ...

May 30, 2022
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objective-c, Programming

IT Nursery

How do I test which class an object is in Objective-C?

How do I test whether an object is an instance of a particular class in Objective-C? Let’s say I want to see if ...

May 29, 2022
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objective-c, Programming

IT Nursery

Execute a terminal command from a Cocoa app

How can I execute a terminal command (like grep) from my Objective-C Cocoa application? 12 Answers 12

May 29, 2022
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