swift-sh VS Alamofire

Yes, swift CLI will compile and run your swift file.

But many people also want to use libraries. For Python, they use the system libraries or work within an environment with installed libraries (i.e., the library-install process happens at environment-configuration time).

In Swift, the easiest way to consume libraries is using packages, but that requires a Package.swift declaring the project scope for the script file (which must comply with top-level and main-entrypoint code requirements).

The easiest way to do that when scripting is a swift tool that manages the process of gathering your library dependencies, auto-generating a project, building the tool, and caching it all so there's no overhead the next time.

The best available tool now is https://github.com/mxcl/swift-sh. It reads dependency information off import comments.

It can also generate the project for you, if/when you want to build in XCode (e.g., move into a more complex application, perhaps requiring sandbox declarations).

Working scripts are not always updated, so any script-build tool has to maintain backwards compatibility, but the swift package manager has changed a lot in recent versions. swift-sh seems to err on the side of backwards compatibility, and does not support e.g., the most recent dependency versioning styles.

Swift-forum discussions about better support for scripting haven't resulted in any official tooling.

Note that this has nothing to do with the Raspberry Pi. You'll have the same issue running on the command-line. If you wish to test your programs on your computer where you have more tools and horse-power, I find swift-sh gives a good command-line experience and is a great alternative to Playgrounds especially for small tests.

Alamofire is a swift http request lib. By default, we need use completion handler to handle response. Today we are going to find out how to use it with async and await.

Looks like your Alamofire tutorial is out of date. I suggest you read the current documentation and update your code. For instance, you can update your example to:

Alamofire - Elegant HTTP networking

Alamofire - Alamofire is an HTTP networking library written in Swift. (de facto standard library for network) Language: Swift.

You can find an example using Alamofire, the most commonly used network framework, here.

https://github.com/Alamofire/Alamofire/blob/master/Documenta...

To add Alamofire, we'll be using Swift Package Manager. Xcode comes with built-in support for it and we'll not have to use external package managers like Cocoapods or Carthage. Click on File → Add Packages...