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# Swift

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According to Wikipedia:

  Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. and the open-source community. First released in 2014, Swift was developed as a replacement for Apple's earlier programming language Objective-C, as Objective-C had been largely unchanged since the early 1980s and lacked modern language features.

Running Swift-language builds and doing Swift development is possible on Linux.

## Installation

Install swift-binAUR for the released version, which is a repackaged Fedora binary, or swift-languageAUR for a native build from source.

For code completion the sourcekit language server protocol, sourcekit-lsp is available, e.g. as plugin to visual studio code, code. See below.

### Editing and code completion

Install code, nodejs and make sure that a Swift toolchain providing sourcekit-lsp (e.g. swift-languageAUR or swift-binAUR) is installed.

    $ git clone git@github.com:swift-server/vscode-swift.git
    $ cd vscode-swift
    $ npm install
    $ npm run dev-package
    $ code --install-extension swift-lang-*-dev.vsix

## Hello world

The Swift package manager allows to create example programs.

    $ swift package init --type executable
    $ swift run

For a library:

    $ swift package init
    $ swift build

## Read eval print loop, REPL

For details on the swift REPL, see here.

    $ swift repl

    Welcome to Swift version 5.3 (swift-5.3-RELEASE).
    Type :help for assistance.
      1> 1+1
    $R0: Int = 2
      2>

Category:

- Programming languages

Swift
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