dudo

class items
  has_many :tags, through: :item_tags
  has_many :item_tags
  belongs_to :city
end

class cities
  has_many_ :items
end

dudo

const audio = new AudioContext(),
      sound = audio.createMediaStreamSource(stream),
      analyser = audio.createAnalyser();
analyser.minDecibels = -60;
// microphone -> filter -> destination.
sound.connect(analyser);
analyser.connect(audio.destination);

const frequencyData = new Uint8Array(analyser.frequencyBinCount).slice(0, 32),
      spectrum = document.querySelector('#spectrum');

dudo

class PostFixCalculator

  attr_accessor :list, :original_list

  def initialize(list)
    @original_list = list
    @list = list.split(' ')
  end

  def evaluation

dudo

class PascalTriangle

  attr_accessor :height

  def initialize(height)
    @height = height.to_i
  end

  def self.next_row(current_row)
    ([0] + current_row).zip(current_row + [0]).map{ |a| a.inject(:+) }

dudo

# Given n points on a 2D plane, find the maximum number of points that lie on the same straight line.

# y = mx + b (Equation of a straight line)

class Plot
  
  attr_accessor :coordinates
  
  def initialize(points=[])
    @coordinates = points

dudo

class Example < ActiveRecord::Base
  include Filterable
  
  filterable scopes: %i(search bar)
  
  scope :foo, ->(q) { where(foo: q) }
  scope :bar, ->(q) { where(bar: q) }
end

dudo

# frozen_string_literal: true

class CsvSerializer
  attr_accessor :data

  def initialize(serializer)
    @serializer = serializer
    @data = serializer&.serializable_hash&.dig(:data) || []
  end

dudo

class ApiConstraint
  def initialize(options)
    @version = options[:version]
    @default = options[:default]
  end
 
  def matches?(request)
    @default || request.headers.fetch(:accept).include?("version=#{version}")
  end
end

dudo

Kubernetes local development

kubectl

• Install Docker for Mac
  • https://store.docker.com/editions/community/docker-ce-desktop-mac
  • once installed enable kubernetes from preferences and select kubernetes as the default orchestrator
  • on the advanced section, increase your cpu and memory to about 2 CPU and 2gb of RAM, for now.

Autocomplete

dudo

# Pundit
# Friendly ID
# FastJSON

module ActsAsResource
  extend ActiveSupport::Concern

  included do
    include Pundit