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Needone

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115 posts
2 hours to master RxSwift - Part 2 RxSwift

2 hours to master RxSwift - Part 2

In this article we will dig a bit more depth in some core concepts on 2 hours to master RxSwift - Part 1. Section 1: Observable Like mentioned in the

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Needone
1 May 2023 · 6 min read
2 hours to master RxSwift - Part 3 RxSwift

2 hours to master RxSwift - Part 3

Introduction In the previous post: 2 hours to master RxSwift - Part 1 (needone.app) and 2 hours to master RxSwift - Part 2 (needone.app), we get to know

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Needone
11 Apr 2023 · 3 min read
2 hours to master RxSwift - Part 1 Swift

2 hours to master RxSwift - Part 1

a simple introudction on rxswift, including what is rxswift, how to use it and a quick example (with swift code) on demo that.

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Needone
14 Mar 2023 · 8 min read
Singleton in Kotlin Kotlin

Singleton in Kotlin

In the Kotlin programming language, a singleton is a design pattern that allows you to create only one instance of a class. This is useful when you want to make

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Needone
11 Mar 2023 · 1 min read
Use keystore to store your sensitive in Kotlin Kotlin

Use keystore to store your sensitive in Kotlin

The keystore is a secure storage location in Android that is used to store encryption keys, digital certificates, and other sensitive information. The keystore is encrypted with a hardware-based key,

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Needone
9 Mar 2023 · 1 min read
Generic type vs. Any in Swift Swift

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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Needone
7 Mar 2023 · 2 min read
indirect enum in Swift iOS

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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Needone
4 Mar 2023 · 1 min read
UITraitCollection Swift

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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Needone
2 Mar 2023 · 2 min read
UIKit vs. SwiftUI - A general discussion Swift

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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Needone
28 Feb 2023 · 2 min read
Certificate pinning and Public key pinning in Kotlin Kotlin

Certificate pinning and Public key pinning in Kotlin

With the last article (Certificate pinning and Public key pinning), we know the concept of Certificate pinning and Public key pinning, and how to implement them in iOS. This article

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Needone
25 Feb 2023 · 1 min read
Certificate pinning and Public key pinning Encryption and decryption

Certificate pinning and Public key pinning

Certificate pinning and public key pinning are both techniques that are used to enhance the security of a network connection by ensuring that the client trusts only a specific certificate

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Needone
23 Feb 2023 · 3 min read
Download image from URL in Kotlin Android

Download image from URL in Kotlin

In Android, we can get the image from synchronously and asynchronously, but it is more common to see in the later. Download image synchronously To download an image from a

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Needone
21 Feb 2023 · 2 min read
Sort custom objects by property in Swift Swift

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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Needone
18 Feb 2023 · 1 min read
RunBlocking in Kotlin Coroutine Android

RunBlocking in Kotlin Coroutine

In previous post, we have gone through most of the key concepts and methods in Coroutine: Kotlin Coroutines Table Content 1, Introduction to Coroutine in Kotlin 2, Non-blocking in Kotlin

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Needone
16 Feb 2023 · 2 min read
Format currency in Swift Swift

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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Needone
14 Feb 2023 · 1 min read
Lazy in Kotlin Android

Lazy in Kotlin

In the Kotlin programming language, the term "lazy" typically refers to a type of property or variable that is only initialized when it is first accessed, rather than when the

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Needone
11 Feb 2023 · 3 min read
Get the current week in Swift iOS

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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Needone
9 Feb 2023 · 1 min read
SceneDelegate iOS

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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Needone
7 Feb 2023 · 2 min read

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