Tagged: Swift
There are 49 items tagged #Swift.
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Sort array of objects by multiple properties with Swift Tuple
Learn how tuple can help you in sorting.
Does Swift enum retain its associated value
An easy question that you might overlook. Learn this simple fact together in this article.
How to create custom operators and do operators overloading in Swift
Learn how to overload existing operators such as +, -, *, / or create a custom one (such as .^.).
Different ways to check if a string contains another string in Swift
Learn how to check if a string contains another string, numbers, uppercased/lowercased string, or special characters.
Different ways to compare string in Swift
String comparison is an essential operation for day to day job. Swift provides a few variations for this. We will visit them in this article.
Different ways to sort an array of strings in Swift
Learn a proper way to sort an array of strings in each circumstance.
How to specify fractional digits for formatted number string in Swift
Learn how to format a Float and Double string.
How expensive is DateFormatter
If you are working on iOS for long enough, there is a chance that you might have known that DateFormatter is expensive, but what is costly about DateFormatter? Let's find out in this article.
How to get the first N elements of array in Swift
Learn a few ways to do it and things you should know when using them.
Getting the number of days between two dates in Swift
There are a few variations when dealing with counting days. You need to ask yourself some questions beforehand.
Understanding Date and DateComponents
Date and time might be among your list of the hardest things in programming (It is for me). Today, I'm going to talk about a basic concept of a Date and its companion DateComponents.
What is @escaping in Swift closures
Learn the meaning of @escaping, so you know what to do when you see it or when you need to write one.
Reduce boilerplate code with an automatic synthesis of Equatable and Hashable conformance
Equatable and Hashable are two essential protocols in the Swift world. Let's learn an old Swift feature that you might forget.
Setting default values for NSUserDefaults
NSUserDefaults is a go-to database for saving users' preferences. Learn how to populate it with your default values.
3 lesser-known ways of using Swift enums
Three language features around Swift enumeration that you might not aware of.
Testing delegates and protocols in XCTest
Learn how to write unit tests for delegate/protocol methods.
How to declare Swift protocol for a specific class
Learn how to create protocols that constrain their conforming types to a given class.
Sleep sort: A sorting algorithm without compare
I can't tell it is a stupid or genius algorithm, but it sure got a beauty in it.
Decode an array with a corrupted element
When working with an unstable, legacy, or third party API, you might get a malformed object in an array. Learn how to decode a JSON array with corrupted data in Codable safely.
How to compare two app version strings in Swift
Learn how to check your app version strings are higher or lower.
How to split a string into an array of substrings in Swift
Learn different ways to split a string into an array of substrings.
How to make multi-line text in UIButton
The default appearance of UIButton is a single line text, but it also supports a multi-line text with some minor tweak.
History of Auto Layout constraints
Learn different ways to define Auto Layout constraints programmatically.
How to preserve a struct memberwise initializer when you have a custom initializer
A tip to declare a custom initializer without losing a memberwise initializer.
Memberwise Initializers for Structure Types
Struct is one of the basic building blocks in your app. Today I'm going to share some tips about memberwise Initializers.
SF Symbols: What is it, and how to use?
Introduction of SF Symbols, learn the basics, and how to use them.
Class-only Protocols: class or AnyObject
If you are still declaring class-only protocols by inheriting them from class, you might need to revise your knowledge.
How to read a Property List (plist) into the code
When I want to keep some information or configuration out of a code base and don't want something fancy, I usually save it as Property List file. Let's see how to do it.
Sign in with Apple Tutorial, Part 4: Web and Other Platforms
Part forth in a series Sign in with Apple. Use Sign in with Apple JS to let users set up accounts and sign in to your website and apps on other platforms.
Print unescaped string output in Swift
How to print object (po) in a debugger (lldb) without escape special characters.
Sign in with Apple Tutorial, Part 3: Backend – Token verification
Part 3 in a series Sign in with Apple. In this part, we will see how backend can use the token to sign up/sign in users.
Sign in with Apple Tutorial, Part 2: Private Email Relay Service
Part 2 in a series Sign in with Apple. In this part, we will talk about the anonymous email address. How to make it work and its limitation.
Sign in with Apple Tutorial, Part 1: Apps
Part 1 in a series Sign in with Apple. In the first part, we will focus on the app part. What we need to do to add Sign in with Apple option in our app.
SwiftUI's ViewModifier
Learn a crucial concept in SwiftUI, view modifier, and a guide of how to create your custom modifier.
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