victor-homyakov

Код на React и TypeScript, который работает быстро

React

• Документация по React.memo: https://reactjs.org/docs/react-api.html#reactmemo
• Документация по useState: https://reactjs.org/docs/hooks-reference.html#usestate
• Исходный код ReactFiberBeginWork: https://github.com/facebook/react/blob/56e9feead0f91075ba0a4f725c9e4e343bca1c67/packages/react-reconciler/src/ReactFiberBeginWork.new.js#L3219
• React.js pure render performance anti-pattern: https://medium.com/@esamatti/react-js-pure-render-performance-anti-pattern-fb88c101332f
• Avoiding unnecessary renders with React context: https://frontarm.com/james-k-nelson/react-context-performance/
• The Secret parts of React New Context API: https://medium.com/@koba04/a-secret-parts-of-react-new-context-api-e9506a4578aa
• Why Did You Render: https://www.npmjs.com/package/@welldone-software/why-did-you-render

Landish

jsconfig.json

{
  "compilerOptions": {
    "baseUrl": "./src",
    "target": "ES6",
    "jsx": "preserve",
    "allowSyntheticDefaultImports": true
  },
 "exclude": ["build", "node_modules"]

morgyface

<?php 
// Custom contact form 7 retreat select
add_action( 'wpcf7_init', 'custom_retreat_select' );

function custom_retreat_select() {
    wpcf7_add_form_tag( 'retreat_select', 'custom_retreat_handler', array( 'name-attr' => true ) );
}

function custom_retreat_handler( $tag ) {
    $atts = array();

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

zeusdeux

/* ES6/ES2015 classes */
class A {
  constructor() {
    this.a = 10
  }
  print() {
    console.log(this.a, this.b)
  }
}

cferdinandi

# Terminal Cheat Sheet

pwd         # print working directory
ls          # list files in directory
cd          # change directory
~           # home directory
..          # up one directory
-           # previous working directory
help        # get help
-h          # get help

jentanbernardus

# Turn on Expires and set default to 0
ExpiresActive On
ExpiresDefault A0
 
# Set up caching on media files for 1 year (forever?)
<FilesMatch "\.(flv|ico|pdf|avi|mov|ppt|doc|mp3|wmv|wav)$">
ExpiresDefault A29030400
Header append Cache-Control "public"
</FilesMatch>