目标和项目之间有什么区别？ [英] what is the difference between target and project?

问题描述

这里是项目和目标的图片

here are the images of the project and target

这两者之间的区别是什么？

what is the difference between this two?

为什么两个都给？

why both are given?

目标图片

An image of target..

推荐答案

• >是一组文件和常规首选项。


• 目标是文件的子集和特定首选项（覆盖项目首选项） li>
  
• 每个目标构建一个产品，可能是一个库，可执行文件或框架。


• 它还具有构建阶段和构建规则，您可以在其中添加依赖项，并修改复制的位置和方式。


• A project is a set of files and general preferences.
• A target is a subset of the files, and specific preferences (which override the project preferences).
• Each target builds a product, which may be a library, executable, or framework.
• Because a target builds something, it also has Build Phases and Build Rules, where you can add dependencies, and refine what gets copied where and how.

事情有两个，因为它让你从同一组文件中创建不同的产品。例如，您可以定位不同的体系结构/设备，或构建一个测试产品，对您的代码运行单元测试。

It's a good thing to have both because it lets you create different products from the same set of files. As an example, you can target different architectures/devices, or build a testing product which runs unit tests against your code.

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