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Command	Desc
G	Move to end of file
dd	Delete and copy line
d	Delete selection
⇧
p	Paste
yy	Copy (yank)
⇧ zz	Save and close

harrietty

const fs = require('fs');
const zlib = require('zlib');

const directoryFiles = fs.readdirSync('./data');

Promise.all(directoryFiles.map(filename => {
  return new Promise((resolve, reject) => {
    const fileContents = fs.createReadStream(`./data/${filename}`);
    const writeStream = fs.createWriteStream(`./data/${filename}.gz`);
    const zip = zlib.createGzip();

harrietty

const fs = require('fs');
const zlib = require('zlib');

const directoryFiles = fs.readdirSync('./data');

Promise.all(directoryFiles.map(filename => {
  return new Promise((resolve, reject) => {
    const fileContents = fs.createReadStream(`./data/${filename}`);
    const writeStream = fs.createWriteStream(`./data/${filename.slice(0, -3)}`);
    const unzip = zlib.createGunzip();

harrietty

const fs = require('fs');
const zlib = require('zlib');

const directoryFiles = fs.readdirSync('./data');

directoryFiles.forEach(filename => {
  const fileContents = fs.createReadStream(`./data/${filename}`);
  const writeStream = fs.createWriteStream(`./data/${filename.slice(0, -3)}`);
  const unzip = zlib.createGunzip();
  fileContents.pipe(unzip).pipe(writeStream);

harrietty

const fs = require('fs');
const zlib = require('zlib');

const fileContents = fs.createReadStream('./data/file1.txt.gz');
const writeStream = fs.createWriteStream('./data/file1.txt');
const unzip = zlib.createGunzip();

fileContents.pipe(unzip).pipe(writeStream);

harrietty

const fs = require('fs');
const zlib = require('zlib');

const fileContents = fs.createReadStream('./data/file1.txt.gz');

console.log(fileContents);

harrietty

Ruby on Rails Cheatsheet (5.1)

Architecture

RVM

$ rvm list - show currently installed Rubies

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Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

harrietty

Setting Up Sinatra Flash

Sinatra Flash is an awesome gem that allows you to pop up little messages alerting your users of important things, via some simple code in your server.rb file. This is very useful for things like displaying error messages if the user has filled out a form wrong, or displaying "success" messages if the user did something successfully like sign in, sign out, or submit a form.

This also gives you a great chance to implement Foundation's beautiful alerts. Here's how to set it up!

1. Install the gem by typing gem install sinatra-flash in your terminal.
2. Require the gem in the top of your server.rb file: require 'sinatra/flash'

harrietty

Setting Up Sinatra Flash

Sinatra Flash is an awesome gem that allows you to pop up little messages alerting your users of important things, via some simple code in your server.rb file. This is very useful for things like displaying error messages if the user has filled out a form wrong, or displaying "success" messages if the user did something successfully like sign in, sign out, or submit a form.

This also gives you a great chance to implement Foundation's beautiful alerts. Here's how to set it up!

1. Install the gem by typing gem install sinatra-flash in your terminal.
2. Require the gem in the top of your server.rb file: require 'sinatra/flash'