Is there a way to save an array within an array using swift?

Question

Is it possible to save an array of names within an array? For example, Lets say we have 2 car companies, Toyota and Honda. And lets say we want to create an array within the car company array of the cars they make. For example...

var ArrayWithinArray = ["Toyota, "SIENNA", "CAMRY"", "Honda, "Odyssey", "Civic""]

How would i do this using swift?

An Array is an object. An Array is an object which contains pointers to other objects. Think about it. — Hot Licks
– Hot Licks, Commented May 15, 2015 at 13:05
I believe Dictionary [String : AnyObject] will be best here - company as a key and array of cars as value. — artur-dev
– artur-dev, Commented May 15, 2015 at 13:08
@HotLicks <pedantry>In Swift, an array is a value which contains other values.</pedantry> Those values may or may not be references (pointers). — Airspeed Velocity
– Airspeed Velocity, Commented May 15, 2015 at 13:17

Airspeed Velocity · Accepted Answer · 2015-05-15 13:25:53Z

1

In such situation, you can create an dictionary of arrays like this:

var listData = [
"Toyota": ["SIENNA", "CAMRY"],
"Honda": ["Odyssey", "Civic"]
]

To access a particular model, ("SIENNA" here)

let model = listData["Toyota"]?.first ?? "Car not found"

model will contain SIENNA

And if you want to iterate over all models

for model in listData["Toyota"] ?? [] {
    println(model)
}

edited May 15, 2015 at 13:25

Airspeed Velocity

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answered May 15, 2015 at 13:09

saurabh

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6 Comments

Hot Licks Over a year ago

That sure looks more like a dictionary of arrays to me.

nachshon fertel Over a year ago

How would i get the sienna value to print? println(self.listData[?])

nachshon fertel Over a year ago

I get an error that says. "Expression resolves to an unused l-value"

saurabh Over a year ago

@LeonardoSavioDabus added your comment as answer, thanks for it

vacawama Over a year ago

To add another model listData["Toyota"]?.append("Prius"). To add a whole new line of cars: listData["Ford"] = ["Taurus", "F-150"].

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