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  [...Array(n)].map((_,i) => i+1).map(x => { ... })

is similar to

  for(let i = 1; i <= n; i++) { ... }

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# frozen_string_literal: true

# Writing and Reading to files
require 'fileutils'

def add_gems
  gem 'devise'
  gem 'simple_form'
end

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cool React Facts dude

• All react components can be self closing. This includes basic html tags because React converts JSX elements to React Elements well before they are represented in the DOM.

const ImageWrapper = ({src}) => (
  <div
    class="wrapper"
    style={{ backgroundImage: `url('${src}')` }}
  />
)

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function splitLow4Bits(num) {
    return (num & parseInt('00001111', 2))
}

function splitHigh4Bits(num) {
    return (num & parseInt('11110000', 2)) >> 4
}

// All this is no longer needed because of
//   the magic of ArrayBuffer and TypedArrays

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User Stories

A user should be able to...

• create an account and login using their google account
• change a pixel's color once during a time period
• view a full screen map of the pixels
• pan and zoom around the map of pixels
• watch pixels change on the map

Models

User >-- Paint --< Pixel

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My WSL Setup

A guide to setup your WSL with Hyper and zsh

Download & Install the WSL

• Follow the very thorough instructions here

Get a prettier terminal

• Download Hyper.js here - I went with the 'hyperblue' theme.

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cd repo

# add the first remote
heroku git:remote -a app-one-name
#set git remote heroku to https://git.heroku.com/app-one-name.git

#next, rename the remote to something else
git remote rename heroku heroku-app-one

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answer = 1 + 4
puts "This is some testing text"

answer = 1 + 4
puts "This is some testing text"

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PC Parts Fair Pricing Store

• Domain
  • User
  • ItemSaleReview
  • Part
  • PartCategory
  • Cart
  • Order
• Features
• authentication

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class StudentsController < ApplicationController
    before_action :find_student, except: [:index, :new, :create]

    def index
        @students = Student.all
    end

    def show
    end