iOS - #NeedOne (Page 2)

Nested method in Swift

A nested method in Swift is a method or function that is defined within another function. Nested functions have the following characteristics: * They have access to all variables and constants

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14 Jan 2023 · 1 min read

Popup alert in Swift

As mentioned in the other article: Popup Custom View in UIKit: popup mainly can be: * popup an alert using UIAlertController * popup action sheet using UIAlertController. For more details, check this:

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12 Jan 2023 · 2 min read

Popup Custom View in UIKit

In UIKit, popup mainly can be: * popup an alert using UIAlertController * popup action sheet using UIAlertController. For more details, check this: Present action sheet in UIKit and SwiftUI * popup a

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10 Jan 2023 · 1 min read

Compiler directives in Swift

This post is going to list some of the most frequently used compiler directives in Swift, compatible in Swift 3/4/5. Someone might call this preprocessor directives, but they

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9 Jan 2023 · 3 min read

Present action sheet in UIKit and SwiftUI

An action sheet is a component that displays a set of choices to the user in a modal format. UIKit In iOS, you can create an action sheet using a

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6 Jan 2023 · 1 min read

What is keyword defer in Swift

The defer keyword in Swift is used to execute a block of code at the end of the current scope, regardless of how the scope is exited. The defer block

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3 Jan 2023 · 1 min read

Command pattern in Swift

Many of us have heard about the Command pattern or used them in the development, which is a behavioral design pattern in which an object is used to encapsulate all

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31 Dec 2022 · 2 min read

Have you tried XCTUnwrap before?

What is XCTUnwrap and how to use it to help you effectively while you are doing the unit test? XCTUnwrap is a utility function that is used in unit tests

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29 Dec 2022 · 1 min read

PLIST file in iOS

A Property List (PLIST) file is a file format used by macOS and iOS to store serialized data. It is often used to store data such as user preferences, settings,

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25 Dec 2022 · 2 min read

Create Property Wrapper in Swift

What is Property Wrapper Property wrapper are a language feature that allows you to wrap a piece of code around a property in Swift world, which can help us to

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20 Dec 2022 · 1 min read

Workplace, Project, Scheme and Target in iOS development

Many of us have seen workspace, project, target and scheme quite often while doing the iOS development, but what are they exactly and how are they related with each other?

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17 Dec 2022 · 2 min read

Equatable and Comparable in Swift

It is quite common that we are required to compare two custom objects in Swift, luckily Swift has provided some built-in protocol allows us to do this in a "swift"

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14 Dec 2022 · 2 min read

Difference between layoutIfNeeded vs. setNeedsLayout

As many of iOS developer known, layoutIfNeeded and setNeedsLayout are two methods that can be used to update the layout of a view and its subviews. But what are their

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13 Dec 2022 · 2 min read

Constructor Injection, Property Injection vs. Method Injection

Dependency Injection is a design pattern that is providing another object with its dependencies, instead of having the object created or managed themselves. There are three main types of dependency

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12 Dec 2022 · 2 min read

ContentHugging vs. ContentCompressionResistance in UIStackView

In Swift, it is quite common to see ContentHugging and ContentCompressionResistance either when we are using the storyboard or code to render the user interfaces in UIStackView. Those 2 properties

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9 Dec 2022 · 1 min read

A summary of use enum in Swift

Enumeration type is a common type in many programming languages, which normally presents a set of limited status for a program, such as list all the directions for a compass:

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1 Mar 2021 · 2 min read

Use Extension in Swift

Extension is a great feature in Swift, which can help us to create helper/utility variables and method, and etc. Use extension to conform protocols It is quite common to

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27 Feb 2021 · 1 min read

Property in Swift

Unlike other programming languages, there are three types properties in Swift. Stored Properties They are constants or variables of a class, and part of the class instances that used to

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25 Feb 2021 · 1 min read