lgraubner / til

📝 Today I learned

TIL

Today I Learned

A collection of concise write-ups on small things I learn day to day across a variety of languages and technologies. These are things that don't really warrant a full blog post.

Inspired by jbranchaud/til

32 TILs and counting...

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Categories

• Bash
• Docker Compose
• Git
• JavaScript
• Jest
• JWT
• MacOS
• MySQL
• NPM
• PHP
• Raspberry Pi
• Ruby
• React
• Redux
• Symfony
• Twig
• Unix

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Bash

• Redirection append vs overwrite

Docker Compose

• Reflect node_modules changes in container

Git

• Add multi command aliases

JavaScript

• Check for Promise
• Custom errors with ES6
• Debounce can be canceled
• Encode and decode Base64 strings

jest

• Third party modules can be easily mocked

JWT

• Refresh tokens can be revoked

MacOS

• Show hidden files with shortcut

MySQL

• Specify credentials in file

NPM

• Check and update dependencies
• Package.json repository shorthand

PHP

• Increase MacOS PHP memory limit
• Static constant to resolve class name

Raspberry Pi

• Change hostname
• Enable SSH headless
• Set static IP
• ssh-copy-id
• Synchronize time with NTP

Ruby

• Use rbenv to manage Ruby on MacOS

React

• Class properties have access to props

Redux

• Dispatch exposes inner function

Symfony

• Escape @ in parameters
• Get user object
• Get current request from request stack
• JMS Serializer naming strategy
• Services in controller actions

YAML

• Multiline variables

Unix

• Add current date to filename
• Prepend line to file
• Watching files with tail