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Bisecting

First you start the bisect

git bisect start

Then you mark good and bad refs

git bisect good v2.6.18

git bisect bad master

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ECMAScript 6 ^{git.io/es6features}

Introduction

ECMAScript 6, also known as ECMAScript 2015, is the latest version of the ECMAScript standard. ES6 is a significant update to the language, and the first update to the language since ES5 was standardized in 2009. Implementation of these features in major JavaScript engines is underway now.

See the ES6 standard for full specification of the ECMAScript 6 language.

ES6 includes the following new features:

• arrows
• classes

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// http://www.barbarianmeetscoding.com/blog/2016/04/27/a-look-at-es6-maps/


const wizardsArchive = new Map();

wizardsArchive.set('jaime', {
   name: 'jaime',
   title: 'The Bold',
   race: 'ewok',
   traits: ['joyful', 'hairless']

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(function() {
    var k, aa = "function" == typeof Object.defineProperties ? Object.defineProperty : function(a, b, c) {
            if (c.get || c.set) throw new TypeError("ES3 does not support getters and setters.");
            a != Array.prototype && a != Object.prototype && (a[b] = c.value)
        },
        ba = "undefined" != typeof window && window === this ? this : "undefined" != typeof global && null != global ? global : this,
        ca = function(a, b) {
            if (b) {
                for (var c = ba, d = a.split("."), e = 0; e < d.length - 1; e++) {
                    var f = d[e];

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Using Git

Global Settings

• Related Setup: https://gist.github.com/hofmannsven/6814278
• Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
• Interactive Beginners Tutorial: http://try.github.io/
• Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

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# first: mkdir user && cd user && cp /path/to/get_gists.py .
# python3 get_gists.py user
import requests
import sys
from subprocess import call

user = sys.argv[1]

r = requests.get('https://api.github.com/users/{0}/gists'.format(user))

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class MyClass
  # All of these are equivalent
  
  def self.myMethod
    true
  end

  def MyClass.myMethod
    true
  end

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Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

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# space150 vine-to-GIF
# given a vine.co uri, downloads the MP4 and creates an image sequence / GIF from it
# requires ruby, ffmpeg, and imagemagick

require 'open-uri'
require 'nokogiri'

id = ARGV[0]

# try to convert from URL to id. 

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{"id":0,"name":"Bitcoin","owner":"0xc0F030eac8b588817f8dA16b9a2CDCcc6451B25c"}
{"id":1,"name":"Trump","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":2,"name":"King","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":3,"name":"Joe","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":4,"name":"china","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":5,"name":"usa","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":6,"name":"love","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":7,"name":"covid19","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":8,"name":"Obama","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}
{"id":9,"name":"buterin","owner":"0x874c44A007168b1f4B260Bc7017504D151b0aF7a"}