1swift(1)                      Swift Documentation                     swift(1)
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3
4

NAME

6       swift -- Safe, fast, and expressive general-purpose programming
7       language
8

SYNOPSIS

10       To invoke the Swift REPL (Read-Eval-Print-Loop):
11
12           swift
13
14       To execute a Swift program:
15
16           swift program.swift -- <arguments>
17
18       To work with the Swift Package Manager:
19
20           swift build|package|run|test [options] <inputs>
21
22       To invoke the Swift compiler:
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24           swiftc [options] <inputs>
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26       A list of supported options is available through the "-help" option:
27
28           swift -help
29
30           swift build -help
31
32           swiftc -help
33

DESCRIPTION

35       Swift is a general-purpose programming language built using a modern
36       approach to safety, performance, and software design patterns.
37
38       The goal of the Swift project is to create the best available language
39       for uses ranging from systems programming, to mobile and desktop apps,
40       scaling up to cloud services. Most importantly, Swift is designed to
41       make writing and maintaining correct programs easier for the developer.
42       To achieve this goal, we believe that the most obvious way to write
43       Swift code must also be:
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45       Safe. The most obvious way to write code should also behave in a safe
46       manner.  Undefined behavior is the enemy of safety, and developer
47       mistakes should be caught before software is in production. Opting for
48       safety sometimes means Swift will feel strict, but we believe that
49       clarity saves time in the long run.
50
51       Fast. Swift is intended as a replacement for C-based languages (C, C++,
52       and Objective-C). As such, Swift must be comparable to those languages
53       in performance for most tasks. Performance must also be predictable and
54       consistent, not just fast in short bursts that require clean-up later.
55       There are lots of languages with novel features - being fast is rare.
56
57       Expressive. Swift benefits from decades of advancement in computer
58       science to offer syntax that is a joy to use, with modern features
59       developers expect. But Swift is never done. We will monitor language
60       advancements and embrace what works, continually evolving to make Swift
61       even better.
62

BUGS

64       Reporting bugs is a great way for anyone to help improve Swift. The bug
65       tracker for Swift, an open-source project, is located at
66       <https://bugs.swift.org>.
67
68       If a bug can be reproduced only within an Xcode project or a
69       playground, or if the bug is associated with an Apple NDA, please file
70       a report to Apple's Feedback Assistant at
71       <https://feedbackassistant.apple.com> instead.
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SEE ALSO

74   HOME PAGE
75       <https://swift.org>
76
77   APPLE DEVELOPER RESOURCES
78       <https://developer.apple.com/swift/resources>
79
80   CODE REPOSITORIES
81       Swift Programming Language at <https://github.com/apple/swift>
82
83       Swift Package Manager at
84       <https://github.com/apple/swift-package-manager>
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88swift 5.3.3                       2021-01-28                          swift(1)