peterc

# Simple, scrappy UDP DNS server in Ruby (with protocol annotations)
# By Peter Cooper
#
# MIT license
#
# * Not advised to use in your production environment! ;-)
# * Requires Ruby 1.9
# * Supports A and CNAME records
# * See http://www.ietf.org/rfc/rfc1035.txt for protocol guidance
# * All records get the same TTL

JoshCheek

require 'objspace'

def self.show_allocations(&block)
  _ = ObjectSpace.trace_object_allocations &block
  ObjectSpace
    .each_object
    .to_a
    .filter_map do |obj|
      file = ObjectSpace.allocation_sourcefile obj
      line = ObjectSpace.allocation_sourceline obj

JoshCheek

# https://twitter.com/josh_cheek/status/1587406334839889921
$**?$    # => ""
$**%$*$  # => ""
$**%**   # => ""
$**%$$   # => ""

$_ = {}
alias $*$_
public def *(*) = itself
alias ** *

brianpetro

Because I couldn't find these with a quick Google search on 28 April 2015:

Usage:
  rails new APP_PATH [options]

Options:
  -r, [--ruby=PATH]                                      # Path to the Ruby binary of your choice
                                                         # Default: /home/brian/.rvm/rubies/ruby-2.2.0/bin/ruby
  -m, [--template=TEMPLATE]                              # Path to some application template (can be a filesystem path or URL)
      [--skip-gemfile], [--no-skip-gemfile]              # Don't create a Gemfile

replaid

components/
  my_bounded_context/
    app/
      presentation/      # This is called the "UI" layer in DDD literature, but it is also 
                         # where things like JSON interfaces live -- any kind of presentation 
                         # or handshake to anything outside. So "presentation" rather than "ui".
        assets/
        helpers/
        mailers/
        views/

unnitallman

require 'active_record'

ActiveRecord::Base.logger = Logger.new(STDERR)
ActiveRecord::Base.colorize_logging = false

ActiveRecord::Base.establish_connection(
    :adapter => "sqlite3",
    :dbfile  => ":memory:"
)

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

yuya-takeyama

module BinaryTree
  class Node
    attr_reader :word, :count, :left, :right

    include Enumerable

    def initialize(word)
      @word, @count = word, 1
    end

palkan

Installation

Go to the official website and choose your OS.

MacOS

Docker for Mac has a problem is the disk IO performance (see docker/for-mac#77).

There is a fix (https://github.com/IFSight/d4m-nfs) which makes Docker use NFS instead of OSXFS.

kany

Rails 6 + ActionCable + Stimulus example for pushing updates to the view.

This example will show how to push updates to the view for a Model instance that has changed without the user having to refresh the page.

This example focuses more on getting ActionCable working with Stimulus. If you don't already have stimulus setup in your app, here's a great write up on how to set it up: https://medium.com/better-programming/how-to-add-stimulus-js-to-a-rails-6-application-4201837785f9

Example scenario

• You have a Scan model with attributes.
• You have a ScanController#show action.
• A user is viewing a Scan through the show.html.slim|haml|erb view template.