Twitter's Recommendation Algorithm

Twitter's Recommendation Algorithm is a set of services and jobs that are responsible for serving feeds of Tweets and other content across all Twitter product surfaces (e.g. For You Timeline, Search, Explore, Notifications). For an introduction to how the algorithm works, please refer to our engineering blog.

Architecture

Product surfaces at Twitter are built on a shared set of data, models, and software frameworks. The shared components included in this repository are listed below:

List of Free Learning Resources In Many Languages

Search the list at https://ebookfoundation.github.io/free-programming-books-search/ .

This page is available as an easy-to-read website. Access it by clicking on .

Intro

This list was originally a clone of StackOverflow - List of Freely Available Programming Books with contributions from Karan Bhangui and George Stocker.

The list was moved to GitHub by Victor Felder for collaborative updating and maintenance. It has grown to become one of GitHub's most popular repositories, with 271,000+ stars, about 9,700 watchers, more than 8,300 commits, 2,400+ contributors, and 54,000+ forks.

The Free Ebook Foundation now administers the repo, a not-for-profit organization devoted to promoting the creation, distribution, archiving, and sustainability of free ebooks. Donations to the Free Ebook Foundation are tax-deductible in the US.

How To Contribute

Please read CONTRIBUTING. If you're new to GitHub, welcome! Remember to abide by our adapted from Code of…

Coding Interview University

I originally created this as a short to-do list of study topics for becoming a software engineer but it grew to the large list you see today. After going through this study plan, I got hired as a Software Development Engineer at Amazon You probably won't have to study as much as I did. Anyway, everything you need is here.

I studied about 8-12 hours a day, for several months. This is my story: Why I studied full-time for 8 months for a Google interview

Please Note: You won't need to study as much as I did. I wasted a lot of time on things I didn't need to know. More info about that below. I'll help you get there without wasting your precious time.

The items listed here will prepare you well for a technical interview at just about any software company including the giants:…

_{Check out my latest app}

Hyperduck
^{Send links from your iOS devices to your Mac (better than AirDrop)}

---

^{My open source work is supported by the community}

^{Special thanks to:}

Your app, enterprise-ready.

_{Start selling to enterprise customers with just a few lines of code.}
^{Add Single Sign-On (and more) in minutes instead of months.}

Strapi is the leading open-source headless CMS.

^{It’s 100% JavaScript, fully customizable, and developer-first.}

API to get search engine results with ease.

API to get search engine results with ease.

---

What is an awesome list?    Contribution guide    Creating a list    Twitter    Stickers & t-shirts

_{Just type awesome.re to go here. Check out my apps and follow me on Twitter.}

Contents

• Platforms
• Programming Languages
• Front-End Development
• Back-End Development
• Computer Science
• Big Data
• Theory
• Books
• Editors
• Gaming
• Development Environment
• Entertainment
• Databases
• Media
• Learn
• Security
• Content…

roadmap.sh

Community driven roadmaps, articles and resources for developers

Roadmaps are now interactive, you can click the nodes to read more about the topics.

View all Roadmaps

Here is the list of available roadmaps with more being actively worked upon.

• Frontend Roadmap / Frontend Beginner Roadmap
• Backend Roadmap
• DevOps Roadmap / DevOps Beginner Roadmap
• Full Stack Roadmap
• Computer Science Roadmap
• QA Roadmap
• Software Architect Roadmap
• Software Design and Architecture Roadmap
• JavaScript Roadmap
• TypeScript Roadmap
• C++ Roadmap
• React Roadmap
• React Native Roadmap
• Vue Roadmap
• Angular Roadmap
• Node.js Roadmap
• GraphQL Roadmap
• Android Roadmap
• Flutter Roadmap
• Python Roadmap
• Go Roadmap
• Java Roadmap
• Spring Boot Roadmap
• Design System Roadmap
• DBA Roadmap
• Blockchain Roadmap
• ASP.NET Core Roadmap
• System Design Roadmap
• Kubernetes Roadmap
• Cyber Security Roadmap
• MongoDB Roadmap
• UX Design Roadmap
• Docker Roadmap
• Prompt Engineering Roadmap

We have also added a new form of visual content covering best practices:

• Code Review Best Practices
• Frontend Performance Best…

JavaScript Algorithms and Data Structures

🇺🇦 UKRAINE IS BEING ATTACKED BY RUSSIAN ARMY. CIVILIANS ARE GETTING KILLED. RESIDENTIAL AREAS ARE GETTING BOMBED.

• Help Ukraine via National Bank of Ukraine
• Help Ukraine via SaveLife fund
• More info on war.ukraine.ua and MFA of Ukraine

This repository contains JavaScript based examples of many popular algorithms and data structures.

Each algorithm and data structure has its own separate README with related explanations and links for further reading (including ones to YouTube videos).

Read this in other languages: 简体中文 繁體中文 한국어 日本語, Polski, Français, Español, Português, Русский, Türkçe, Italiana, Bahasa Indonesia, Українська, Arabic, Tiếng Việt, Deutsch

☝ Note that this project is meant to be used for learning and researching purposes only, and it is not meant to be used for production.

Data Structures

A data structure is a particular…

Node.js Best Practices

Follow us on Twitter! @nodepractices

Read in a different language: CN, FR, BR, RU, PL, JA, EU (ES, HE, KR and TR in progress! )

🚀 We have an official Node.js starter - Practica.js. Use it to generate a new solution skeleton with all the practices baked inside. Or just it to learn by code examples

Latest Best Practices and News

• 🛰 2023 edition is released soon: We're now writing the next edition, stay tuned?

• ✨ 89,000 stars: Blushing, surprised and proud!

• 🔖 New menu and tags: Our menu is collapsible now and includes #tags. New visitors can read #strategic items first. Returning visitors can focus on #new content. Seniors can filter for #advanced items. Courtesy of the one and only Rubek Joshi

• French translation!1! : The latest translation that joins our international…

Tech Interview Handbook

Read on the website

Join/follow us on Discord | Twitter | Telegram | Facebook

What is this?

Not everyone has the time to do a few hundred LeetCode questions. Here are free and curated technical interview preparation materials for busy engineers, brought to you by me, the author of Blind 75. Over 500,000 people have benefitted from this handbook!

Besides the usual algorithm questions, other awesome stuff includes:

• Best practice questions for coding interviews
• Grind 75 - the next evolution of Blind 75, bigger and better
• How to prepare for coding interviews
• Coding interview best practices - Straight-to-the-point Do's and Don'ts
• Algorithm cheatsheets and tips categorized by topic
• Step-by-step Software Engineer resume guide to prepare a FAANG-ready resume
• Behavioral questions asked by the top tech companies
• Front end interview preparation

Help from you in contributing content would be very much appreciated!

Why would you read this?

…

Project Based Learning

A list of programming tutorials in which aspiring software developers learn how to build an application from scratch. These tutorials are divided into different primary programming languages. Tutorials may involve multiple technologies and languages.

To get started, simply fork this repo. Please refer to CONTRIBUTING.md for contribution guidelines.

Table of Contents:

• C#
• C/C++
• Clojure
• Dart
• Elixir
• Erlang
• F#
• Go
• Haskell
• HTML/CSS
• Java
• JavaScript
• Kotlin
• Lua
• OCaml
• PHP
• Python
• R
• Ruby
• Rust
• Scala
• Swift
• Additional resources

C/C++:

• Build an Interpreter (Chapter 14 on is written in C)
• Memory Allocators 101 - Write a simple memory allocator
• Write a Shell in C
• Write a FUSE Filesystem
• Build Your Own Text Editor
• Build Your Own Lisp
• How to Program an NES Game in C
• Write an OS from scratch
• How to create an OS from scratch
• Building a CHIP-8 Emulator
• Beginning Game Programming with C++ and SDL
• Implementing a Key-Value…

30 seconds of code

Short JavaScript code snippets for all your development needs

• Visit our website to view our snippet collection.
• Search for snippets that suit your needs. You can search by name, tag, language or using a snippet's description. Just start typing a term and see what comes up.
• Browse all snippets or individual snippet collections for each topic.
• Click on each snippet card to view the whole snippet, including code, explanation and examples.
• You can copy code blocks on any snippet card, using the copy button at the top right.
• If you like the project, give it a star. It means a lot to the people maintaining it.

Want to contribute?

• If you want to help us improve, take a minute to read the Contribution Guidelines first.
• Use the relevant template.md to add new snippets to each collection.
• If you find a problem with a specific snippet, please…

free-for.dev

Developers and Open Source authors now have a massive amount of services offering free tiers, but it can be hard to find them all to make informed decisions.

This is a list of software (SaaS, PaaS, IaaS, etc.) and other offerings that have free tiers for developers.

The scope of this particular list is limited to things that infrastructure developers (System Administrator, DevOps Practitioners, etc.) are likely to find useful. We love all the free services out there, but it would be good to keep it on topic. It's a bit of a grey line at times so this is a bit opinionated; do not be offended if I do not accept your contribution.

This list is the result of Pull Requests, reviews, ideas and work done by 1100+ people. You too can help by sending Pull Requests to add more services or by remove ones whose offerings have…

Please read contributing guidelines before submitting new resources.

Table of Contents

• UI Graphics
• Fonts
• Colors
• Icons
• Logos
• Favicons
• Icon Fonts
• Stock Photos
• Stock Videos
• Stock Music & Sound Effects
• Vectors & Clip Art
• Product & Image Mockups
• HTML & CSS Templates
• CSS Frameworks
• CSS Methodologies
• CSS Animations
• Javascript Animation Libraries
• Javascript Chart Libraries
• UI Components & Kits
• React UI Libraries
• Vue UI Libraries
• Angular UI Libraries
• Svelte UI Libraries
• React Native UI Libraries
• Design Systems & Style Guides
• Online Design Tools
• Downloadable Design Software
• Design Inspiration
• Image Compression
• Chrome Extensions
• Firefox Extensions
• AI Graphic Design Tools
• Others

UI Graphics

Websites and resources with modern UI components in different formats such as PSD, Sketch, Figma, etc. They are great for ideas for web components/UI

👇 Practice Daily on iCodeThis.com 👇

📒 App Ideas Collection

Have you ever wanted to build something but you had no idea what to do? Just as authors sometimes have "writers block" it's also true for developers. This list is intended to solve this issue once and for all! 👍

These applications are:

• great for improving your coding skills 💪;
• great for experimenting with new technologies 🆕;
• great for adding to your portfolio to impress your next employer/client 📁;
• great for using as examples in tutorials (articles or videos) 📃;
• easy to complete and also easily extendable with new features 👌;

This is not just a simple list of projects, but a collection that describes each project in enough detail so that you can develop it from the ground up!

Each project has the following features:

1. A clear and descriptive objective;
2. A list of…

Table of Contents: Build your own X

This repository is a compilation of well-written, step-by-step guides for re-creating our favorite technologies from scratch.

What I cannot create, I do not understand — Richard Feynman.

It's a great way to learn.

• 3D Renderer
• Augmented Reality
• BitTorrent Client
• Blockchain / Cryptocurrency
• Bot
• Command-Line Tool
• Database
• Docker
• Emulator / Virtual Machine
• Front-end Framework / Library
• Game
• Git
• Network Stack
• Neural Network
• Operating System
• Physics Engine
• Programming Language
• Regex Engine
• Search Engine
• Shell
• Template Engine
• Text Editor
• Visual Recognition System
• Voxel Engine
• Web Browser
• Web Server
• Uncategorized

Tutorials

Build your own 3D Renderer

• C++: Introduction to Ray Tracing: a Simple Method for Creating 3D Images
• C++: How OpenGL works: software rendering in 500 lines of code
• C++: Raycasting engine of Wolfenstein 3D
• C++: Physically Based Rendering:From Theory To Implementation
• C++: Ray Tracing in One Weekend
• C++: Rasterization: a…

See how the exact same Medium.com clone (called Conduit) is built using different frontends and backends. Yes, you can mix and match them, because they all adhere to the same API spec 😮😎

While most "todo" demos provide an excellent cursory glance at a framework's capabilities, they typically don't convey the knowledge & perspective required to actually build real applications with it.

RealWorld solves this by allowing you to choose any frontend (React, Angular, & more) and any backend (Node, Django, & more) and see how they power a real-world, beautifully designed full-stack app called Conduit.

Read the full blog post announcing RealWorld on Medium.

Join us on GitHub Discussions! 🎉

Implementations

Over 100 implementations have been created using various languages, libraries, and frameworks.

Explore them on CodebaseShow.

Create a new implementation

Create a new implementation >>>

Or you can view upcoming implementations (WIPs).

English ∙ 日本語 ∙ 简体中文 ∙ 繁體中文 | العَرَبِيَّة‎ ∙ বাংলা ∙ Português do Brasil ∙ Deutsch ∙ ελληνικά ∙ עברית ∙ Italiano ∙ 한국어 ∙ فارسی ∙ Polski ∙ русский язык ∙ Español ∙ ภาษาไทย ∙ Türkçe ∙ tiếng Việt ∙ Français | Add Translation

Help translate this guide!

The System Design Primer

Motivation

Learn how to design large-scale systems.

Prep for the system design interview.

Learn how to design large-scale systems

Learning how to design scalable systems will help you become a better engineer.

System design is a broad topic. There is a vast amount of resources scattered throughout the web on system design principles.

This repo is an organized collection of resources to help you learn how to build systems at scale.

Learn from the open source community

This is a continually updated, open source project.

Contributions are welcome!

Prep for the system design interview

In addition…

🌍 Čeština ∙ Deutsch ∙ Ελληνικά ∙ English ∙ Español ∙ Français ∙ Indonesia ∙ Italiano ∙ 日本語 ∙ 한국어 ∙ polski ∙ Português ∙ Română ∙ Русский ∙ Slovenščina ∙ Українська ∙ 简体中文 ∙ 繁體中文

The Art of Command Line

Note: I'm planning to revise this and looking for a new co-author to help with expanding this into a more comprehensive guide. While it's very popular, it could be broader and a bit deeper. If you like to write and are close to being an expert on this material and willing to consider helping, please drop me a note at josh (0x40) holloway.com. –jlevy, Holloway. Thank you!

• Meta
• Basics
• Everyday use
• Processing files and data
• System debugging
• One-liners
• Obscure but useful
• macOS only
• Windows only
• More resources
• Disclaimer

Fluency on the command line is a skill often neglected or considered arcane, but it improves your flexibility…

Documentation

TensorFlow is an end-to-end open source platform for machine learning. It has a comprehensive, flexible ecosystem of tools libraries, and community resources that lets researchers push the state-of-the-art in ML and developers easily build and deploy ML-powered applications.

TensorFlow was originally developed by researchers and engineers working within the Machine Intelligence team at Google Brain to conduct research in machine learning and neural networks. However, the framework is versatile enough to be used in other areas as well.

TensorFlow provides stable Python and C++ APIs, as well as a non-guaranteed backward compatible API for other languages.

Keep up-to-date with release announcements and security updates by subscribing to announce@tensorflow.org See all the mailing lists.

Install

See the TensorFlow install guide for the pip package, to enable GPU support, use a Docker container, and build from source.

To install the current release…

"Knowledge is powerful, be careful how you use it!"

A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools, and more.

📔  What is it?

This repository is a collection of various materials and tools that I use every day in my work. It contains a lot of useful information gathered in one piece. It is an invaluable source of knowledge for me that I often look back on.

🚻  For whom?

For everyone, really. Here everyone can find their favourite tastes. But to be perfectly honest, it is aimed towards System and Network administrators, DevOps, Pentesters, and Security Researchers.

ℹ️  Contributing

If you find something which doesn't make sense, or something doesn't seem right, please make a pull request and please add valid and well-reasoned explanations about your changes or comments.

A few simple rules for this project:

• inviting and…