cjohansen

#!/bin/sh
git clone https://github.com/busterjs/fs-watch-tree.git
cd fs-watch-tree
npm install lodash
npm install when
npm install async
npm install platform
npm install minimatch
npm install rimraf
git clone https://github.com/busterjs/referee.git node_modules/referee

cjohansen

var http = require("http");

// Start a server with netcat:
// nc -l 9292

var req = http.request({
    host: "localhost",
    port: 9292,
    path: "/",
    method: "POST"

cjohansen

module App
  def self.call(env)
    puts env["rack.input"].read.inspect
    [200, {}, []]
  end
end

run App

# With the client below, this prints the following for body:

cjohansen

NewPersonValidator = Validator.define do
  validates_presence_of :name
end

class Person
  attr_accessor :name
  def initialize(name); @name = name; end
end

person = Person.new("Frank")

cjohansen

require "use_case/validator"

class NewRepositoryValidator
  include UseCase::Validator
  validates_presence_of :name
end

class Thing
  attr_accessor :name
end

cjohansen

require "virtus"

class Person
  include Virtus

  attribute :name, Integer
end

p = Person.new

cjohansen

class ThingCreator < Mutations::Command
  required do
    # ...
  end

  optional do
    # ...
  end

  def execute

cjohansen

node_modules

cjohansen

#!/usr/bin/env ruby

if ARGV.length < 2
  puts "#{File.basename(__FILE__)} file pattern [grep options]"
  exit 1
end

`git reflog #{ARGV[0]}`.split("\n").each do |ref|
  oid = ref.split(" ").first
  if `git cat-file -p #{oid}:#{ARGV[0]} | grep #{ARGV[1]}` != ""

cjohansen

tl;dr

If you must nest functions in a way that requires access to multiple this', alias outer this to something meaningful - describe the value it's holding. Treat this as the invisible first argument.

In general though, avoiding the situation (nested functions and frivolous use of this) will frequently produce clearer results.

Naming this in nested functions

I was accidentally included in a discussion on how to best name this in nested functions in JavaScript. +1's were given to this suggestion of using _this.

Giving style advice on naming nested this without a meaningful context isn't too helpful in my opinion. Examples below have been altered to have at least some context, although a completely contrived and stupid one.