Swift Tutorial Free For You To Use Brooo

Agenda
Comments
Download and Installation
2
First program
3
Proprietary content. ©Great Learning. All Rights Reserved. Unauthorized use or distribution prohibited
4
Variables
6
Operators
7
Datatypes
5
Introduction
1
Practical
8
Optional Types
9
Conditional Constructs
10

Introduction

Introduction
• Swift is a general purpose programming language for developing iOS applications. It is developed by Apple
Inc.
• It is powerful and intuitive language which is easy to learn.
• Swift is a fantastic way to write software, whether it’s for phones, desktops, servers, or anything else that
runs code.
• Swift follows Objective-C runtime library which allows C, Objective-C, C++ and Swift code to run within one
program.
• Swift 5.4 is the latest version of Swift.
• The compiler is optimized for performance and the language is optimized for development, without
compromising on either.

Introduction
Swift defines away large classes of common programming errors by adopting modern programming patterns:
• Variables are always initialized before use.
• Array indices are checked for out-of-bounds errors.
• Integers are checked for overflow.
• Optional ensure that nil values are handled explicitly.
• Memory is managed automatically.
• Error handling allows controlled recovery from unexpected failures.
Swift code is compiled and optimized to get the most out of modern hardware. The syntax and standard library
have been designed based on the guiding principle that the obvious way to write your code should also
perform the best.

There are mainly two things to download when you want to work with Swift in windows:
1. Swift installer for Windows
2. Visual Studio 2019 Community

Go to swift.org – the official website of Swift and download the windows tool chain of it.

Go to https://visualstudio.microsoft.com/downloads/ – the official website of Visual studio and download the
Community edition of it.

Start the visual studio installer and complete some necessary steps while installing:

This is how the visual studio window will appear when it will be downloaded and installed:

Tick “Desktop development with C++”.

Once all requirements are ticked, we can start Installing our visual studio:

Now, its time to open swift installer and install swift in our system.
In order to make the Windows SDK accessible to Swift, it is necessary to deploy a few files into the Windows
SDK. The following will modify your Visual Studio Installation, and as such will require to be run from an
(elevated) “Administrator”
Because it is installing the files into the Visual Studio image, the files will need to be copied each time Visual
Studio is updated.

Copy these with copy command and run it in the command prompt:
%SDKROOT%usrshareucrt.modulemap "%UniversalCRTSdkDir%Include%UCRTVersion%ucrtmodule.modulemap"
%SDKROOT%usrsharevisualc.modulemap "%VCToolsInstallDir%includemodule.modulemap"
%SDKROOT%usrsharevisualc.apinotes "%VCToolsInstallDir%includevisualc.apinotes"
%SDKROOT%usrsharewinsdk.modulemap "%UniversalCRTSdkDir%Include%UCRTVersion%ummodule.modulemap"

First Program

First Program
- Environments variables for the Swift compiler:
set SWIFTFLAGS=-sdk %SDKROOT% -resource-dir
%SDKROOT%usrlibswift -I %SDKROOT%usrlibswift -L
%SDKROOT%usrlibswiftwindows
- Building a Swift program:
swiftc %SWIFTFLAGS% -emit-executable -o First.exe First.swift

Comments

Comments
The first way to write a comment is:
// This is a comment. It is not executed.
This is a single line comment. You could stack these up like so to allow you to write paragraphs:
// This is also a comment.
// Over multiple lines.
However, there is a better way to write comments that span multiple lines:
/* This is also a comment.
Over many...
many...
many lines. */
This is a multi-line comment. The start is denoted by /* and the end is denoted by */.

Datatypes

Datatypes
• Int or UInt − This is used for whole numbers.
Use Int32, Int64 - 32 or 64 bit signed integer
whereas UInt32 or UInt64 - 32 or 64 bit unsigned integer variables.
• Float − This is used to represent a 32-bit floating-point number and numbers with smaller decimal points. For
example, 3.14159, 0.1, and -273.158.
• Double − This is used to represent a 64-bit floating-point number and used when floating-point values must be
very large. For example, 3.14159, 0.1, and -273.158.
• Bool − This represents a Boolean value which is either true or false.
• String − This is an ordered collection of characters. For example, "Hello, World!"
• Character − This is a single-character string literal. For example, "C"
• Optional − This represents a variable that can hold either a value or no value.
• Tuples − This is used to group multiple values in single Compound Value.

Variables

Variables
• var variableName = <initial value>
• var siteName:String
siteName = “great learning"
print(siteName)
• var siteName = “great learning"
siteName = “great learning academy"
print(siteName)
• var varA = “Swift"
var varB = 3
print("The course duration of (varA) is (varB) months.")

Operators

Operators
• Assignment Operator
• Arithmetic Operators
• Remainder Operator
• Unary Minus Operator
• Unary Plus Operator
• Compound Assignment Operators
• Comparison Operators
• Ternary Conditional Operator
• Range Operators
• Logical Operators

Practical

Optional Types

Conditional Constructs

Thank You

Swift Tutorial Free For You To Use Brooo

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