Swift中的子模块 [英] Submodules in Swift

问题描述

说我有一个应用程序MyApp，它构建在Xcode工作区中.在此工作区中，我有主要的应用程序目标和两个嵌套的Xcode项目，分别用于Foo和Bar.

Say I have an app, MyApp which is built in an Xcode workspace. Inside this workspace I have the primary app target and two nested Xcode projects for my frameworks, Foo and Bar.

在我的应用程序内部，我导入Foo和Bar，然后依赖项将Foo中的对象注入Bar中的对象.说，但是，我不需要全部的Foo，仅需要几节课.我如何在foo中创建一个子模块并将其导入.例如.导入Foo.Models.Animals.Dog

Inside my app I import Foo and Bar and dependency inject an object in Foo into an object in Bar. Say, however, I don't need all of Foo, just a couple of classes. How could I create a submodule within foo and import that. E.g. import Foo.Models.Animals.Dog

推荐答案

尽管您可以做类似的事情

import struct MyModule.MyStruct

import func Darwin.glob

我不确定你是否能比这更深入.这是(免费)Swift书

I'm not sure if you can get much deeper than that. Here's a relevant quote from the (free) Swift book

提供更多详细信息会限制导入哪些符号-您可以在模块或子模块中指定特定的子模块或特定的声明.使用此详细格式时，在当前作用域中只能使用导入的符号(而不是声明它的模块)."

"Providing more detail limits which symbols are imported—you can specify a specific submodule or a specific declaration within a module or submodule. When this detailed form is used, only the imported symbol (and not the module that declares it) is made available in the current scope."

它继续说明您可以导入typealias，struct，class，enum，protocol，var或func

It goes on to explain that you can import any of typealias, struct, class, enum, protocol, var, or func

Swift似乎对子模块提供了某种类型的支持(在某些地方被提及)，但是我不确定我们是否能够实际编译这些子模块.

It looks as though Swift has some type of support for submodules (they're mentioned offhand a few places), but I'm not sure we have the ability to actually compile those just yet.

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