Code Snippets

Swift, Async/await, Firebase

Observe changes for key in Firebase database (async/await)

Observe changes for key in Firebase database using Swift's async/await

Swift, Async/await, Firebase

Set Encodable value for key in Firebase database (async/await)

Set an Encodable value for a key in Firebase database using Swift's async/await

Swift, Firebase, Async/await

Delete Firebase user (async/await)

Delete Firebase user using Swift's async/await

Swift, Firebase, Async/await

Observe Firebase auth state (async/await)

Observe Firebase auth state changes using Swift's async/await

iOS, Swift, UIKit

Reusable protocol

Easy UITableView/UICollectionView cell registering/dequeuing with the power of protocols and extensions

Subscript with default arguments

Swift 5.2 added subscript with default arguments, it gets quite powerful for custom subscripts, but also default ones like in this example

Get a random element from array

Get a random element from array - O(1)

Swift, iOS, UIKit

Screenshot from UIView

Generate a screenshot from a UIView

Print to the same line

Print to console using the same line (useful for progress logging)

Read and write JSON

Read and write JSON

Sync a fork from original repository

Sync a fork of a repository to keep it up-to-date with the upstream repository.

Global Sass variables in styled-components

Define and use global Sass variables in styled-components

Autocomplete fields in Django Admin

Show autocomplete search dropdown for ManyToManyField fields in Django admin.

Pre-populate fields in Django admin

Pre-populate fields' text based on the content of another field in Django admin

Use Docker networks to share the same localhost

Use Docker networks to share the same localhost between containers.

Create dynamic pages in NextJS

Create dynamic pages that fetch their content from an API in NextJS

Serve static robots.txt

Serve a static robots.txt in Nginx

Disable Nginx version in headers

Disable Nginx version in response headers for security reasons

Multiple requirements files

Use different requirements files for development and production environments

Join URL and path

Use urllib to join a URL and path the proper way without worrying about leading or trailing slashes

NextJS, Javascript

Redirect index to page

Redirect index to another page in NextJS applications.

Clear out the history of a git repository

Steps to clean out the commits history of a git repository

Stop all Docker containers

One-liner to stop all Docker containers

Django TrimCharField

A CharField that ignores leading and trailing spaces in data

Create a Result from optional value-error pair

If you use ObjC APIs that have optionals for both value and error in their callback handlers, this extension to map them into a Result type might be useful.

Use first(where:)

Use first(where:) to get the first element of the sequence that satisfies the given predicate.

Multiple levels sorting with tuples

Use tuples to sort Comparable objects based on multiple properties. Example: sorting contacts by surname; then by name, to see all names from the same family in a row.

Use property observers

Use Swift's property observers to observe and respond to changes in a property’s value. Both `willSet` and `didSet` takes a default parameter to get new and old values

Generics in typealias

Use a generic type in type aliases to increase code reusability. Notice how the same type alias is used for all Post, [Post], and [Book] 😎

The ~= operator

Use the ~= operator in Swift to check for patterns. Say you have an array and you want to get an object at index in a safe way

Updating a feature branch

Bring your feature branch up to date with master.

Pull submodules after cloning repo

Pull submodules in a git repo after cloning.

Dark mode change detection

Respond to appearance changes in system preference live in the browser in macOS 10.14+ and iOS 13+.

Remove trailing slash from URL

Avoid duplicate content in your website analytics by removing the trailing slash from URL using Nginx

Make trailing slash optional in Django

Make trailing space optional in Django by overriding `SimpleRouter` in your `urls.py`

Remove all node_modules directories

Remove all node_modules directories before taking a backup of your files to make your life easier :)

Git Commits Per Author

Get number of commits in a git repository per author.

LOC Per Author

Get number of lines contributed per each author in a git repository

Encode string and replace /%20/ with +

Encode string and replace /%20/ with + to be used in a URL

List of countries

List of all countries - suitable for a contact page.

Validate email address format

A simple extension to check if an email is in valid format using Regex

Get iOS application icon

Get the icon for an iOS application

Initialize UIColor from HEX value

A simple Swift extension to initialize UIColor from a hex string taking into consideration edge cases and hex representation variations

Decode Bool from Int or String

Because, you know, sometimes the backend guys send us a 1 or TRUE and expect us to map it to native Bool object, well, they are kinda right, it shouldn't matter that much

Save and retrieve Codable objects to UserDefaults

Because why not!

Create an object from a given array

Create an object from a given array

Copy String To Clipboard

Copy a string to clipboard

Check if object is Empty

Check if an object is Empty

Extensions Wrapper

Use the power of protocols and generic types to avoid extension conflicts

Safe Collection Subscript

Safe subscript protects the collection from out of bounds error by using optionals.

Copyright © 2024 Omar Albeik. All rights reserved.