Add multiple identical elements to array in swift

Question

How would I add multiple identical elements to an array?

For instance, if the array was:

["Swan", "Dog"]

and I wanted to turn it into:

["Swan", "Dog", "Cat", "Cat", "Cat", "Cat", "Cat", "Cat", "Cat", "Cat", "Cat", "Cat"]

(adding 10 Cats)

It there a simple command I can do, which does not use a loop?

Martin R · Accepted Answer · 2016-10-27 09:10:42Z

26

In Swift 3 you can use repeatElement() which creates a collection containing the specified number of the given element:

var array = ["Swan", "Dog"]
array.append(contentsOf: repeatElement("Cat", count: 10))

In Swift 2 this would be:

var array = ["Swan", "Dog"]
array.appendContentsOf(Repeat(count: 10, repeatedValue: "cat"))

answered Oct 27, 2016 at 9:10

Martin R

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Comments

Dmitri Pavlutin · Accepted Answer · 2020-02-14 15:02:34Z

7

The array initilizer Array(repeating:count:) can be used to create an array with repeated values:

var myArray = ["Swan", "Dog"]
myArray += Array(repeating: "Cat", count: 10)

answered Oct 27, 2016 at 9:28

Dmitri Pavlutin

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