YogeshChauhan . com

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()
amazon

Most Read

#1 How to check if radio button is checked or not using JavaScript? #2 Solution to “TypeError: ‘x’ is not iterable” in Angular 9 #3 How to uninstall Cocoapods from the Mac OS? #4 How to add Read More Read Less Button using JavaScript? #5 How to Use SQL MAX() Function with Dates? #6 PHP Login System using PDO Part 1: Create User Registration Page

Recently Posted

May 7 How to disable right click and drag and drop of images using jQuery? May 7 How to render Lists in React? May 7 What’s the difference between variables in CSS and SCSS (Sass)? May 7 How to define variables in SCSS (Sass)? May 7 How to show and hide an element on click in React? May 5 Use inline if to make a shorter conditional syntax in React

You might also like these

CurrencyPipe in Angular 9 with ExamplesAngularUPDATE and DELETE Statements in PostgresPostgresSQL Right JoinSQL/MySQLPre-defined DatePipe format options in Angular 9Angular5 Key Principles Of Good Website UsabilityUI/UXCheck if mixin is being called in a style rule or not in SCSSSCSS5 Steps to Create a Line using Canvas Tag in HTML5HTMLOpen Source Security Tools for Defense SecurityMiscCreate dynamic selectors using SCSS (Sass)SCSSKilling A Project Part 1: What criteria should be used to cancel/kill a project?MiscHow to modify the latest post array using get_posts() in WordPress?WordPressLearn to make a responsive gallery using CSS Grid and without media queriesCSS