Görkem gorkemozkan

Conventional Commit Messages

See how a minor change to your commit message style can make a difference.

git commit -m"<type>(<optional scope>): <description>" \
  -m"<optional body>" \
  -m"<optional footer>"

Group Array of JavaScript Objects by Key or Property Value

Implementation

const groupBy = key => array =>
  array.reduce((objectsByKeyValue, obj) => {
    const value = obj[key];
    objectsByKeyValue[value] = (objectsByKeyValue[value] || []).concat(obj);
    return objectsByKeyValue;

Does event delegation actually improve performance?

Event delegation works by attaching a single event listener to a parent element to catch events bubbling up from the children. Many people believe this is more performant than attaching event listeners to each child. I am not convinced this is always true.

Let's start with a common example of event delegation. Here we have a list of elements:

<ul id="item-list">
  <li data-cost="12">Item 1</li>
  <li data-cost="18">Item 2</li>
  <li data-cost="6">Item 3</li>
 ...

Merged from https://github.com/joelparkerhenderson/git_commit_message and https://chris.beams.io/posts/git-commit/

General Rules

Commit messages must have a subject line and may have body copy. These must be separated by a blank line.
The subject line must not exceed 50 characters
The subject line should be capitalized and must not end in a period
The subject line must be written in imperative mood (Fix, not Fixed / Fixes etc.)
The body copy must be wrapped at 72 columns
The body copy must only contain explanations as to what and why, never how. The latter belongs in documentation and implementation.

MongoDB Practice

MongoDB Exercise in mongo shell

Connect to a running mongo instance, use a database named mongo_practice.

Document all your queries in a javascript file to use as a reference.

Insert Documents

HTML Style Guide

All rules and guidelines in this document apply to HTML files.

The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

Icon Legend:

· Space, ⇥ Tab, ↵ Enter/Return

	import * as Sentry from "@sentry/node";
	import imagemin from "imagemin";
	import mozjpeg from "imagemin-mozjpeg";
	import sharp from "sharp";
	import isJpg from "is-jpg";
	import * as aws from "aws-sdk";
	import { Upload } from "../../types/graphqlUtils";
	import { generateFilename } from "./generateFilename";

	export const s3 = new aws.S3({


	/*
	##Device = Desktops
	##Screen = 1281px to higher resolution desktops
	*/

	@media (min-width: 1281px) {

	/* CSS */

	// === Arrays

	var [a, b] = [1, 2];
	console.log(a, b);
	//=> 1 2


	// Use from functions, only select from pattern
	var foo = () => [1, 2, 3];