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iOS Swift 2.0 Basics Swift Types String Manipulation

Posted by Nils Garland
Nils Garland
18,416 Points

I dont understand

i dont understand how to concate

strings.swift 
let name = "Pasan"

let greeting = "Hi there"

let interpolatedgreeting = "\(greeting), (name)"

let finalGreeting = "How are you?"

let greeting = "\(How are you?)"

let interpolatedgreeting = "\(finalGreeting), \(name). \(greeting)"

1 Answer

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Concatenating is simply taking two strings and smushing them together. We do this with a simple plus sign. Take this example:

let name = "Nils Garland"
let rocks = "rocks!"
let nilsGarlandRocks = name + " " + rocks

That code would assign the string "Nils Garland rocks!" to the variable nilsGarlandRocks. Note that I also used a concatenation to put an extra space in there. Otherwise the string would have been "Nils Garlandrocks!".

Interpolation is the use of the backslashes and parentheses. It tells the string "Hey! Insert the value of this variable here" So our example could have been written as:

let nilsGarlandRocks = "\(name) \(rocks)"

Hope that clarifies things a bit. But if you need the actual answer here's a link to where I've answered this particular one before. https://teamtreehouse.com/community/interpolatedaddress-challenge-task-2-of-2-question

I promise you're not alone in being confused by this! Happy coding!