Operators

Overview

Conditional & Logical Operators

Operator	Description
:	Declares to property
=	Assign, to be
==	Equals to
===	Identical to
!===	Note identical to
!=	Not equal to
!	Not
>	Comparison - Greater then
<	Comparison - Less then
&&	And (Ampersand-Ampersand)
||	Or
? :	Ternary Conditional Operator => "expression ? true-value : false value"
?	Optional, there might not be anything
??	Nil-Coalescing Operator (Checks whether an optional contains a value or not)
$	Two-Way-Binding
\()	Parentezin içine hangi field 'ı istiyorsan onu yazıyorsun
...	up to and including
..<	up to but excluding
%	Remainder
->	Return
\	Quote "His best selling book is \"The Power of Habits\" for years"

Compound Assignment Operators

Operator	Description
+=	Adds to itself
-=	Subtracts from itself
*=	Multiplies itself
/=	Divides itself

Unary Operators

Operator	Description
+	Turns negative number into positive
-	Turns positive number inti negative

Example

var numberpositive: Int = 6 // print: 6
var numbernegative = -numberpositive // print: -6

Other Operators

Operator	Description
" " (quote)	String
""" """ (triple quote)	Multi-Line String
\n	Linebreak, New Textline

Optionals

when you define a variable as an Int you write "= Int"

But if you don't want to define it in advance you will add "?" sign to end of it like "= Int?"

Latter gives you a flexibility but the former

Sample Codes

let pers1 = "Sedat"
let pers2 = "Veysel"
pers1 == pers2 //: false
pers2 > pers1 //: true, çünkü Veysel kelimesi Sedat kelimesinden sonra gelir

let movie = """
A day in
the life of oan
Apple engineer
"""

Sources

Videos

Articles / Documents

• https://www.kodeco.com/28092971-programming-in-swift-fundamentals/lessons/3

• How to create variables and constants

• https://docs.swift.org/swift-book/LanguageGuide/BasicOperators.html

• https://www.hackingwithswift.com/example-code/language/optional-vs-implicitly-unwrapped-optional-whats-the-difference

• SarunW / What does ?? operator means in Swift

• Programiz / Swift Operators