Data Types

Overview

Data Type	Description
Integer	Whole numbers
Floating points	Decimal numbers
Doubles	Decimal numbers with higher precision
Strings	Characters and Text
Booleans	True / False

Saving = Persistence

JSON => JavaScript Object Notation

JSON Data Types

• Bool

• Integer & Floating-Point numbers

• String

• Array

• Dictionary <String, Any>

• Data: Encoded using Strings

• Date: ???

Notes

• Integers are precise numbers.

• Double Formats are not as precise as Integers. They have a little bit of inaccuracy.

• Swift will not allow implicitly calculating Integers and Doubles together for the sake of type safety. So we should choose one of the number formats.

Sources

Videos

Articles / Documents

• https://www.hackingwithswift.com/quick-start/beginners/how-to-store-decimal-numbers