swift

Swift language compiler and package manager

TLDR

Start REPL

$ swift

Run script

$ swift [script.swift]

Build package

$ swift build

Build release

$ swift build -c release

Run package

$ swift run

Run tests

$ swift test

Create new package

$ swift package init --type [executable]

Show dependencies

$ swift package show-dependencies

SYNOPSIS

swift [build] [run] [test] [package] [options] [files]

swift is the Swift programming language compiler and package manager. It builds, runs, and tests Swift applications.
The REPL provides interactive Swift execution. It's useful for experimentation and learning.
Swift Package Manager handles dependencies and builds. Package.swift defines targets, dependencies, and products.
Debug builds are fast to compile with debugging support. Release builds optimize for performance.
Testing integrates XCTest framework. Tests run with swift test, supporting parallel execution.
Cross-platform support includes Linux and Windows beyond Apple platforms. Server-side Swift is a common use case.

PARAMETERS

build

Build the package.

run [TARGET]

Build and run.

test

Run tests.

package init

Create new package.

package update

Update dependencies.

package resolve

Resolve dependencies.

-c CONFIG

Build configuration (debug, release).

-Xswiftc FLAG

Pass flag to compiler.

--version

Show version.

--help

Show help.

CAVEATS

Full functionality on macOS. Linux support is good but some Apple frameworks unavailable. Windows support is newer.

HISTORY

Swift was announced by Apple at WWDC 2014, developed by Chris Lattner and others. It was open-sourced in 2015. Swift has evolved significantly, with Swift 6 introducing strict concurrency.