Yogesh Chauhan's Blog

How to create an empty array in Swift?

in Swift on March 7, 2020

We can create an empty array by specifying the Element type of your array in the declaration.

For example:


var numbers: [Double] = []

var names: [String] = []

// The full type name is also allowed
var emptyFloats: Array<Float> = Array()

Add value to the array:


names.append("James")

Also, we can just append a variable. For example,


let myName = "Yogesh"
names.append(myName)

Add multiple elements at the same time by passing another array or a sequence of any kind to the append(contentsOf:) method.


names.append(contentsOf: ["Shakia", "William"])

You can add new elements in the middle of an array by using the insert(_:at:) method for single elements and by using insert(contentsOf:at:) to insert multiple elements from another collection or array literal. The elements at that index and later indices are shifted back to make room.


names.insert("Liam", at: 3)

To remove elements from an array, use the remove(at:), removeSubrange(_:), and removeLast() methods.


names.remove(at: 0)

names.removeLast()

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