iOS - #NeedOne

2 hours to master RxSwift - Part 4: Subscriber in Depth

In RxSwift, a Subscriber is used to listen to the observable sequence (last post) and reacts to any events emitted by that sequence. It is also named Observer in other

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23 Mar 2023 · 1 min read

2 hours to master RxSwift - Part 3: Observable in depth

In this article we will dig a bit more depth in some core concepts on Part 2: . Like mentioned in the last article, an Observable in RxSwift will emit events

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20 Mar 2023 · 2 min read

2 hours to master RxSwift - Part 2: Core concepts

In the example of previous article: 2 hours to master RxSwift - Part 1, we probably saw some code such as subscribe without any explanation, we will go through some

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14 Mar 2023 · 3 min read

2 hours to master RxSwift - Part 1

About this series This series is to help people to get started with RxSwift easily with straight forward examples, plain explanation. And YES, if you would like to spend 2

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14 Mar 2023 · 5 min read

Generic type vs. Any in Swift

Generic type In Swift, a generic type is a placeholder for a specific type that is specified when the generic type is used. A generic type allows you to write

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7 Mar 2023 · 2 min read

indirect enum in Swift

An indirect enum in Swift is an enum that can be used to define a recursive data structure. This means that one or more of its cases can refer to

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4 Mar 2023 · 1 min read

UITraitCollection

UITraitCollection is a class in the UIKit framework that defines a set of interface traits that specify the environment in which your app is running. These traits include the device’

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2 Mar 2023 · 2 min read

UIKit vs. SwiftUI - A general discussion

UIKit and SwiftUI are two different frameworks for building user interfaces on Apple platforms. UIKit UIKit is the older of the two frameworks, and has been around since the early

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28 Feb 2023 · 2 min read

Sort custom objects by property in Swift

Many of us have met the situation that we have an array/list of custom objects, and we want them can be sorted in a specific order. For example, we

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18 Feb 2023 · 1 min read

Format currency in Swift

Recently I have done quite an amount of work on formatting currency in Swift project, here are some tricks on how to format number in Swift: Format currency with auto

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14 Feb 2023 · 1 min read

Get the current week in Swift

To get the current week in Swift 5, you can use the Calendar and DateComponents classes to calculate the week number for the current date. Here's an example of how

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9 Feb 2023 · 1 min read

SceneDelegate

In iOS, the SceneDelegate is a class that is responsible for managing the scenes in your app. A scene is a discrete unit of your app's user interface, such as

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7 Feb 2023 · 2 min read

Data Racing in Swift

A data race in Swift occurs when two or more threads access the same memory location simultaneously and at least one of them is writing to it, without proper synchronization.

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4 Feb 2023 · 2 min read

@AppStorage vs. @UserDefault in SwiftUI

Both the @AppStorage and @UserDefault property wrappers in SwiftUI allow you to store and retrieve data using UserDefaults. However, there are a few key differences between the two: @AppStorage In

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31 Jan 2023 · 2 min read

Get location coordinates using CLLocationManager in Swift

To get the location (latitude and longitude) of a device in Swift, you can use the Core Location framework, which is an official library from Apple. Only 2 steps are

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28 Jan 2023 · 2 min read

Encode URL in Swift

It is quite common to see that we can correctly set up the HTTP header, token, body and POST/GET methods in our iOS code, but we still can't get

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26 Jan 2023 · 2 min read

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