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iOS Swift Basics (retired) Variables and Constants Variables

Jose Gutierrez
Jose Gutierrez
170 Points
Posted by Jose Gutierrez
Jose Gutierrez
170 Points

Basic String Question

What is the purpose of ": string =" when coding in Swift. It seems the code does the same thing with or without it?

2 Answers

Timothy Tuite
Timothy Tuite
5,429 Points
Timothy Tuite
Timothy Tuite
5,429 Points

By putting : String you are specifing the data type as you get further into the course it will make more sense. Also It makes your code easier for others to read.

Dennis Parussini
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Dennis Parussini
Treehouse Project Reviewer
Dennis Parussini
.a{fill-rule:evenodd;}techdegree seal-36
Dennis Parussini
Treehouse Project Reviewer

Actually you can use the :Swift, :Int, :Double but you don't have to. If you initialize the var or let with a value, you don't need to also write :String. Example:

var gretting = "Hello"

If you don't know or don't want to give the var or let a value you HAVE to initialize it with the :String etc. Example:

var greeting: String