marshall-lee

require 'singleton'

class AtMost
  include Singleton

  def initialize
    @table = Hash.new { |h, k| h[k] = -1 }
  end

  def call(n)

marshall-lee

class Container {
    constructor() {
        this.defResolvers = {};
        this.defPromises = {};
    }

    require(depList, body) {
        let depPromises = depList.map(d => this.defPromise(d));
        return Promise.all(depPromises)
            .then((deps) => body(...deps))

marshall-lee

[17] pry(main)> puts Post.all.select(1).to_sql
SELECT 1 FROM "posts"
=> nil
[18] pry(main)> puts Post.all.select(1).limit(1).to_sql
SELECT  1 FROM "posts" LIMIT 1

Why put two space after SELECT?

marshall-lee

def build(str)
  str = str.dup
  str.prepend '\A'
  str.gsub! %r{/:([a-z]+)}, '/(?<\1>[^\/]+)'
  str << '(?<format>\.[a-z]\w*)?'
  str << '\z'
  Regexp.new(str)
end

rx = build('/posts/:id/comments')

marshall-lee

module ToBoolean
  def self.cast(value)
    @type ||= ActiveRecord::Type::Boolean.new
    !! @type.type_cast_from_user(value)
  end
end

marshall-lee

class Yo < ActiveRecord::Base
  def self.ordered_find(ids)
    where(id: ids).to_a.index_by(&:id).values_at(*ids)
  end
end

marshall-lee

Keybase proof

I hereby claim:

• I am marshall-lee on github.
• I am async_prince (https://keybase.io/async_prince) on keybase.
• I have a public key ASDBDye6iuyGh7j0xupyz5-4kpssL5tbVWR0aeyyl4k7bQo

To claim this, I am signing this object:

marshall-lee

# app/models/document.rb

class Person < ActiveRecord::Base
  validate &PassportValidator
end

# lib/yoba_validator.rb

class YobaValidator < SimpleDelegator
  include ActiveModel::Validations

marshall-lee

# Prevent HTTP requests to be made into private network (in Ruby!)
# Just an example, don't use it in production!

require 'http'
require 'resolv'

class StaticResolveTCPSocket
  def initialize(lookup)
    @lookup = lookup.dup
    @lookup.default_proc = proc do |_h, host|

marshall-lee

# decompress gzip-ed VCR fixtures

require 'zlib'
require 'psych'

Dir.glob('spec/fixtures/vcr_cassettes/**/*.yml').each do |filename|
  data = Psych.load_file(filename)

  changed = false
  data['http_interactions'].each do |interaction|