thegitfather

Vanilla JavaScript Quick Reference / Cheatsheet

Just migrated it from Codepen.io to markdown. Credit goes to David Conner.

Working with DOM	Working with JS	Working With Functions
Accessing Dom Elements	Add/Remove Array Item	Add Default Arguments to Function
Grab Children/Parent Node(s)	Add/Remove Object Properties	Throttle/Debounce Functions
Create DOM Elements	Conditionals

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?

hassansin

Model::

  /*Select*/
  select('col1','col2')
  ->select(array('col1','col2'))
  ->select(DB::raw('businesses.*, COUNT(reviews.id) as no_of_ratings, IFNULL(sum(reviews.score),0) as rating'))  
  ->addSelect('col3','col4')
  ->distinct() // distinct select
  
  /*From*/