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17_6_Accessing_Bitcoind_with_Swift.md
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@ -6,7 +6,7 @@ This section explains how to interact with `bitcoind` using the Swift programmin
## Setting Up Swift on Your Mac
To date, we've built all of our alternative programming languages on your Debian virtual node. However, that's not the best platform for Swift. Though there is a version of Swift available for Ubuntu platforms, it's not fully featured, and it works somewhat differently from the Mac-native Swift. A "Variant" at the bototm of this chapter explains how to set it up, but be warned that you'll be in uncharted territory.
To date, you've built all of your alternative programming language development environments on your Debian virtual node. However, that's not the best platform for Swift. Though there is a version of Swift available for Ubuntu platforms, it's not fully featured, and it works somewhat differently from the Mac-native Swift. A "Variant" at the bottom of this chapter explains how to set it up, but be warned that you'll be in uncharted territory.
As for setting up Swift on your Mac, it's pretty easy. Generally, you'll just call up the App Store and install "Xcode" on your Mac. But, if you prefer
@ -36,25 +36,31 @@ rpcuser=oIjA53JC2u
rpcpassword=ebVCeSyyM0LurvgQyi0exWTqm4oU0rZU
## Setting Up Swift (Debian)
## Variant: Deploying Swift on Ubuntu
If you prefer to deploy Swift on Ubuntu, you can do so, though the functionality isn't the same. Some of the code in this chapter will likely generate errors that you'll need to resolve, and you'll also need to do more work to link in libraries.
To get started, install some required libraries:
```
$ sudo apt-get install clang
$ sudo apt-get install libcurl4 libpython2.7 libpython2.7-dev
```
Debian 10 or higher:
If you're using Debian 10 or higher (and you really should be), you'll also need to backdate a few libraries to get older versions:
```
$ sudo apt-get install libtinfo5 libncurses5
```
Afteward you can download and install Swift:
```
$ wget https://swift.org/builds/swift-5.1.3-release/ubuntu1804/swift-5.1.3-RELEASE/swift-5.1.3-RELEASE-ubuntu18.04.tar.gz
$ tar xzfv swift-5.1.3-RELEASE-ubuntu18.04.tar.gz
$ sudo mv swift-5.1.3-RELEASE-ubuntu18.04 /usr/share/swift
```
For things to work, you should update your `PATH` in your `.bashrc`:
```
$ echo "export PATH=/usr/share/swift/usr/bin:$PATH" >> ~/.bashrc
$ source ~/.bashrc
```
You can now test Swift out with the `--version` argument:
```
$ swift --version
Swift version 5.1.3 (swift-5.1.3-RELEASE)
@ -62,6 +68,7 @@ Target: x86_64-unknown-linux-gnu
```
### Creating a Project
Once you've installed Swift on your Ubuntu machine, you can create projects with the `package init` command:
```
$ mkdir swift-project
$ cd swift-project/
@ -78,12 +85,15 @@ Creating Tests/swift-projectTests/
Creating Tests/swift-projectTests/swift_projectTests.swift
Creating Tests/swift-projectTests/XCTestManifests.swift
```
You'll then edit `Sources/.../main.swift` and when you're ready to compile, you can use the `build` command:
```
$ swift build
[4/4] Linking swift-project
```
Finally, you'll be able to run the program from the `.build/debug` directory:
```
$ .build/debug/swift-project
Hello, world!
```
Good luck!