门牙
发表于 2025-3-21 20:00:27
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标准
发表于 2025-3-21 22:10:43
Java and C: Key Differencestially different things in C—., as the French would say—and constructs that are foreign to Java. Where Objective-C adds to the C language in an unambiguous way, the similarities between Java and C can be a source of confusion. So the first step in your journey to Objective-C is to become comfortable
Urologist
发表于 2025-3-22 01:07:07
Creating an Xcode Projectthing more frustrating than trying to learn a complex topic without any way of exploring each individual concept. To that end, I’ll take a brief respite from the theoretical and indulge in the purely pragmatic task of creating a working Objective-C application in Xcode, Apple’s free software develop
Ambiguous
发表于 2025-3-22 07:37:52
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Commentary
发表于 2025-3-22 09:14:25
Garbage Collection collection and let the run time system take care of the details. But there are situations when you do need to pay attention to garbage collection. Weak references and finalize methods require some understanding of what causes objects to become garbage and how they get collected.
thwart
发表于 2025-3-22 15:18:49
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隐藏
发表于 2025-3-22 19:05:38
Communicating Near and Fartreme, burning a file to a compact disc that’s later read by another program “communicates” data to that application. This chapter focuses on communication technologies that exchange data directly between objects via an independent agent or service.
遭受
发表于 2025-3-22 22:08:51
Exception Handling none of the demands that Java does. You can design and write code using Objective-C exceptions exactly as you would in Java, completely ignore them, or settle somewhere in between. This chapter will briefly compare the similarities between Objective-C and Java exception handling—of which there, are
overshadow
发表于 2025-3-23 03:41:48
Threadsore, multiprocessor computer systems have become the norm, rather than the exception. Efficient multi-threaded programming is now essential to effective program development, and it’s a trend that continues to accelerate.
侵略者
发表于 2025-3-23 05:44:31
Collection Patternsnto arrays, dictionaries (maps), and sets. Objects in an array have a specific order, addressed by a numeric index. Dictionaries (maps) organize objects into unordered pairs, each pair being a unique key object and a value object. The key object is used to identify and address the value object. Fina