📚 Today I learned

📚 Today I learned

🎓 Today I Learned

📝 Today I Learned - Sharing and documenting the things I learn on a daily basis. I share tiny snippets of code here which too small for a blog post but fit here. These are tiny things which make a big difference. Over the time they are lost and documenting them along the way would be beneficial for everyone. Many a times, I also come back to my til, because all the information is ordered and easy to access. Contains a cat gif, because, cats make people happy. Scroll to the bottom, to see the cat gif. 😸

🌐 For a steady stream of TILs and my other blog posts, checkout my website arshadmehmood.com. To read these tils in a nice, beautiful looking way, read them here on my blog.

📚 126 TILs and counting… 🚀

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🚀 How to Use This Repository

📖 Browse by Category: Click on any category below to jump to that section 🔍 Search: Use Ctrl+F (or Cmd+F on Mac) to search for specific topics 🌐 Web Version: Visit arshadmehmood.com/today-i-learned for a better reading experience ⭐ Star this repo: If you find it useful, consider giving it a star!

📊 Quick Stats

🎯 Total TILs: 126 📁 Categories: 20

🔥 Top Categories:

1. 🐍 Python: 37 TILs
2. 🅰️ Angular 2+: 18 TILs
3. 📝 Git: 12 TILs
4. ⚡ JavaScript: 9 TILs
5. 🔧 Other: 6 TILs

📋 Categories

• 🤖 Android
• 🅰️ Angular 2+
• 💎 C#
• 🎨 CSS
• 🐳 Docker
• 📘 Facebook
• 🔥 Firebase
• 📝 Git
• 🐙 GitHub
• ⚡ JavaScript
• 💎 Jekyll
• 🌐 Nginx
• 💚 Node.js
• 🔧 Other
• 🐘 PHP
• 💻 Programming
• 🐍 Python
• 🗄️ SQL
• 📘 TypeScript
• 💚 Vue.js

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🤖 Android

• Circular ImageView with Picasso
• Create region in Android studio
• Load data in webView second time
• Show logs from TimingLogger
• String array in XML

🅰️ Angular 2+

• Add a Window Resize event listener for a component
• Add Dynamic Css Style Properties
• Add SEO to an Angular App
• Apply two or more pipes
• Bind local method to Dom event listener
• Close Dialog from typescript
• Disable closing the dialog on clicking outside the dialog window in Angular
• Get query parameters
• Hide an element based on window size
• Pass data to routerLink
• Pretty Print Json Object In Template
• Safe template data binding with ngOnInit
• Select Option With Default Value
• Send Multipart Form Data With Post Request
• Specify port for ng serve
• Update Data Model from any component or service using @Input Decorator
• Use div contenteditable property with template model binding
• Using and importing custom font in Angular 5

💎 C#

• Cast or deserialize a Json object to a class in C#
• Create A Stream From String
• Create Stream from a Base64 String
• Encode/Decode Base64 string in C#
• Ldap Query Search Filter Syntax
• Wait N Seconds Without Blocking Ui

🎨 CSS

• Float Left/Right with display:flex
• RTL list with boostrap
• Star ratings with percentage

🐳 Docker

• Check Postgres db table in Docker
• Docker Build and Push: docker build/push vs docker buildx
• Multiple Ways to Run a Docker Container

📘 Facebook

• Deeplinking Applinks for Facebook

🔥 Firebase

• Add Cache-Control headers
• Get Firebase Project Name
• Where to find Firebase cloud messaging server API key in firebase console

📝 Git

• Add or link another git repository as a submodule
• Clone without folder
• Delete local branch
• Delete remote branch
• Fixing Detached HEAD in a Git Submodule
• Ignore local commits and pull repository from the remote branch
• Move Commits To A New Branch
• Pull changes from the master or other branch
• Remove staged files
• Revert Changes from Folder to Branch
• Revert the latest commit
• Undo git pull

🐙 GitHub

• Add a license to an exisiting Github Repository
• Codeblock highlighting programming languages supported by Github
• Get Github Repository size with BASH

⚡ JavaScript

• Add an attribute to a json object using spread operator
• Document getElementById check if not null
• Filter a Javascript Array
• Get only unique values from a Javascript Array
• Local Storage
• Remove class name from element
• Remove element from DOM
• Replace Everything Before A Certain Point Using Regex
• Trim/Remove first or last character in Javascript

💎 Jekyll

• Setting up jekyll/Github Pages environment

🌐 Nginx

• How To Test Nginx Config File

💚 Node.js

• Get directory name and filename of the current module in Nodejs
• Running NPM Scripts in Parallel or Sequentially

🔧 Other

• Add a new file type to context menu in Windows 10
• Add Current User As The Owner Of A Folder
• Configure and connect Mysql Workbench with SSH connection
• Enable Curl in PHP.ini running on EasyPHP
• List installed packages on Linux
• Take permissions of a folder using sudo on Linux

🐘 PHP

• Allow CORS - Cross origin resource sharing
• Compress string or data
• Enable gzip compression
• Fetch MySql column values as array
• Install mbstring on Linux

💻 Programming

• Programming languages case styles

🐍 Python

• Check If String Is Numeric
• Check Palindrome
• Combine or merge two pandas Dataframes using a index
• Convert dictionary values or keys to list
• Convert list to dictionary with indexes
• Convert List To String
• Delete key from dictionary
• Docstring for describing functions
• Enumerate list / get index in for loop
• For Each Loop With Index
• Get a list of dictionary values
• Get json from a URL
• Get unique elements from a list
• Get unique elements from a list of lists
• Iterate Over Dictionary Key Value Pairs
• Iterate Over Nested Lists
• Label plot lines in matplotlib
• Positive infinity
• Print Object To String
• Python null object singleton
• Read json file to pandas Dataframe
• Remove word starting with a specific character
• Replace multiple terms from a string
• Replace URLs using Regex
• Reservoir sampling a list
• Reverse string
• Select columns from a pandas dataframe
• Set difference
• Set intersection
• Shallow copy a dictionary
• Shuffle list
• Sort dictionary by value
• Split dictionary into chunks
• String Starts With A List Of Strings
• Strip Non Alphabetical Or Non Alphanumeric Characters In A String
• Trim strings in Python
• using set() + len()

🗄️ SQL

• Find all tables with a specific column name
• Return results in json
• Search for a table name in a database
• Select all columns from the joined table and some from the other
• View table schema using SQL

📘 TypeScript

• Ignore a typerscript error

💚 Vue.js

• Add dynamic Css Style or Class
• Conditional rendering with if else
• OnClick Event Handling

• Optional parameters in Vue Router

  🐱 Catz

  

💡 Inspiration

I shamelessly stole this idea from wajahatkarim3/Today-I-Learned, then I also saw other similar repositories and decided to share my own repo of what I learn everyday.

🤝 Contributing

The best way you can contribute is to support the idea of keeping track of things you learned. Just create a public repo and start writing and sharing notes. This is way better than keeping them to yourself.

📄 License

© 2018-2025 Arshad Mehmood

This repository is licensed under the MIT license. See LICENSE for details.