sfcgeorge

class DynamicIvars
  def greet(**options)
    options.each { |k, v| instance_variable_set :"@#{k}", v }
    p @hello
  end
end

DynamicIvars.new.greet hello: "world"
# => "world"

sfcgeorge

require "json"

class JsonSlop
  def initialize(json)
    @hash = json.is_a?(String) ? JSON.parse(json) : json
  end

  def call
    JsonSlopProxy.new(@hash)
  end

sfcgeorge

require "pp"

MAPPING = {
  1 => [],
  2 => %w(A B C),
  3 => %w(D E F),
  4 => %w(G H I),
  5 => %w(J K L),
  6 => %w(M N O),
  7 => %w(P Q R S),

sfcgeorge

module ActiveSupport
  # A typical module looks like this:
  #
  #   module M
  #     def self.included(base)
  #       base.extend ClassMethods
  #       base.class_eval do
  #         scope :disabled, -> { where(disabled: true) }
  #       end
  #     end

sfcgeorge

Example Blog App with Auth

Pure Rails compared to Hyperloop

The purpose here is to show a high level overview of how Rails concepts map to Hyperloop concepts. It's not a full tutorial (I started doing that but it was way too long), but examples of key points.

Auth

Here's a simple auth example, with a comment showing all you have to add to hook it up to Hyperloop. In a production app you'd probably use Devise, but the Hyperloop acting_user bit would be the same!

sfcgeorge

CREATE FUNCTION count_estimate(query text) RETURNS integer AS $$
DECLARE
  rec   record;
  rows  integer;
  row  integer;
BEGIN
  rows := 1;
  FOR rec IN EXECUTE 'EXPLAIN ' || query LOOP
    row := substring(rec."QUERY PLAN" FROM ' rows=([[:digit:]]+)')::integer;
    IF (row != 0) THEN rows := rows * row; END IF;

sfcgeorge

Framework	Multi platform	Native code	Native UI	Native widgets	Declarative UI	Native UX
Native	no	yes	yes	yes	no	yes
Ruby Motion	mobile	yes	yes	yes	no	yes
Cordova	mobile	yes	yes	yes	no	yes
RNW	yes	no	yes	no	yes	with effort
NativeScript	yes	no	yes	no	yes	with effort
Flutter	yes (web coming)	yes	yes	no	yes	maybe
Cordova	yes	no	no	no	yes	no

sfcgeorge

# frozen_string_literal: true

# https://github.com/Shopify/graphql-batch/blob/master/examples/association_loader.rb
require 'graphql/batch'

class AssociationLoader < GraphQL::Batch::Loader

  def initialize(association_name)
    @association_name = association_name
  end

sfcgeorge

Keybase proof

I hereby claim:

• I am sfcgeorge on github.
• I am sfcgeorge (https://keybase.io/sfcgeorge) on keybase.
• I have a public key ASCbgmrBCz_87ERTRKj2j_VQgtSIRfLz4aUq7rXokPf-zwo

To claim this, I am signing this object:

sfcgeorge

# frozen_string_literal: true

require 'rails'
require 'scenic'

module Scenic
  # @api private
  module SchemaDumper

    private