Basic Tasks
[基本功能]
Now that you’ve learned enough about Objective-C to read and write basic code, you can begin to think in terms of objects. Just as you would think about objects in the real world, you need to think about what an object contains, what you can do with it, and how it relates to other objects.
[既然，你已经学习到足够多的关于如何使用Objective-c去阅读和编写基本的代码，你就应该开始考虑对象了。就像你在现实世界中考虑对象一样，你需要去考虑一个对象包含了什么、你可以使用对象去做什么以及一个对象是如何和其他对象进行关联]
To create an iOS app, you need to know how to create objects, compare objects, query objects for information about them, and access objects in collections such as arrays. These tasks are common in iOS apps. After you acquire these skills, you are ready to take on（担当） more complicated Objective-C code.
[为了创建一个IOS应用，你需要知道如何去创建对象、对比对象、查询对象信息以及如何从集合中访问他们，比如说数组集合。这些功能在IOS应用中是非常常见的。你一旦掌握这些技能，你就做好了编写（担当）更复杂Objective-c代码的准备]
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