porterjamesj

Code Review

A consolidation of advice and stuff from the internet

What is code review?

Code review one person reading over another's code and offering comments, suggestions, and feedback about how it could be improved. Often this is done at companies or in open source projects as a required step before proposed changes can be merged into a

ntamvl

Controller Concerns in Rails 4

If you setup a Rails 4 app, you’ll notice the app/models/concerns and app/controllers/concerns directories. Concerns are modules that can be mixed into your models and controllers to share code between them.

Some developers falsely classify mixins as composition when they are actually a form of inheritance. When you include a module in a class, that module’s methods are added to the inheritance chain just like a parent class’ methods are added to a subclass. So, don’t think you’ve solved the problem of inheritance by simply splitting your inherited code into separate files!

That being said, mixins can be a valuable tool to share code between classes that are otherwise unrelated. Here’s an example of how I chose to use it recently.

I am adding admin reporting features to an app I’m hoping to launch soon. I have an admin controller with a simple before filter to redirect if the current user is not an administrator.

class AdminController < ApplicationController

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

hlissner

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Note: these instructions are for pre-Sierra MacOS. Sierra (10.12) and newer users see https://gist.github.com/gravitylow/fb595186ce6068537a6e9da6d8b5b96d by @gravitylow

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If you are getting this in gdb on OSX while trying to run a program:

tache

#Using LetsEncrypt SSL certificates on AWS

This is a document for managing the LetsEncrypt certificates on AWS for Cloudfront and Opsworks.

##Setup

The following are instructions for using LetsEncrypt under Mac OS. It is for a single token for a single server.

It is an active project, so make sure you do a pull every so often.

loisaidasam

If you're like me and you use semver for versioning your tags, you probably hate when you do this:

$ git tag -l
0.1.0
0.10.0
0.2.0
0.3.0
0.3.1
0.4.0

0.5.0

sharplet

require "rspec/autorun"

class Enumerator::Lazy
  def reduce(*)
    Lazy.new([nil]) do |yielder, _|
      yielder << super
    end
  end

  def join(separator="")

maxivak

Integrate Gem/Engine and main Rails app

Overview

• Paths
• Routes
• Add functionality to controller
• Improving (Extending or overriding) Engine functionality
• Helpers
• Assets

nberger

(ns recipes.core
  (:refer-clojure :exclude [==])
  (:use [clojure.core.logic]
        [clojure.core.logic.pldb :as pldb]))

(db-rel in-larder i)
(db-rel recipe r)
(db-rel in-recipe r i)
(db-rel compound-ingredient i is)

mrw34

jq -r '["List", "Card"], ((reduce .lists[] as $list ({}; .[$list.id] = $list.name)) as $lists | .cards[] | select(.closed != true) | [$lists[.idList],.name]) | @csv' <nw3RUeLl.json