tangentus

KNOWN_PLANINDROMES = %w(racecar hannah).freeze

def unique_palindrome(books)
  palindromes_per_book = {}
  books.each do |book_name, book_words|
    palindromes_per_book[book_name] = {}

    # filter out any unknown palindromes
    book_words.split(" ").each do |word|
      next unless KNOWN_PLANINDROMES.include?(word)

tangentus

module Benchmarkable
  extend ActiveSupport::Concern

  class_methods do
    attr_reader :benchmarkable_file_path

    def benchmark_to(file_path)
      @benchmarkable_file_path = file_path
    end
  end

tangentus

SomeCollection.collection.aggregate([
                                           {
                                               "$match": { # This ensures that we only calculate a count where the attribute exists
                                                   "some_attribute": {
                                                       "$exists" => true
                                                   }
                                               }
                                           },
                                           {
                                               "$project": {

tangentus

## Resources used to create this query
# https://docs.mongodb.com/ruby-driver/current/tutorials/ruby-driver-crud-operations/#updating
# https://docs.mongodb.com/manual/reference/operator/update/positional-filtered/

ProductCollection.with(client: :background) do |klass|
  klass.collection.update_many(
      {"product_references" => {"$exists" => true}}, # ensure that the `product_references` field exists
    { "$set" => { "product_references.$[elem].listed" => true } }, # says "update all documents matching the array filters below"
    {
    # this `array_filters` allows you to set conditions on a field that is an array. The "elem" name is arbitrary and only needs to be the same everywhere it is used

tangentus

class Blah
  def initialize
    @hello = 'world'
  end
end
blah = Blah.new
blah_binding = blah.instance_eval { binding }
ERB.new("<%= hello %>").result(blah_binding)
# Result:
# NameError: undefined local variable or method `hello' for #<Blah:0x00007fcb999d2990 @hello="world">

tangentus

anchor = proc do |a|
            proc {|b| "#{a} #{b}" }
         end
append = proc {|p| p.call("b")}
(anchor >> append).call("a")
anchor.call("a").call("b")

tangentus

const form = document.getElementById("form");
form.addEventListener("click", (e) => {
   e.preventDefault();

  const formData = new FormData(form);
  const csrf = document.querySelector("meta[name='csrf-token']").getAttribute("content");
  fetch("/", {
      method: "POST",
      body: JSON.stringify({order_form: formData}),
      headers: {

tangentus

<%= render StimulusComponent.new controller: "test" do |component| %>
  <button <%= component.action :click, :test, :test %>>Hello, Stimulus Component!</button>
<% end %>