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/*
Throttle ensures fn runs at most once per delay period (default 1 second).
On the first call, it immediately invokes fn and sets a timeout.
Any subsequent calls during the delay window are ignored.
Once the timeout expires, timeoutId resets to null, allowing the next call through.
This is a "leading-edge" throttle — the function fires right away, then locks out for delay ms.
Note that calls made during the cooldown are silently dropped (not queued), so the last trailing call can be lost.
*/
export function throttle(fn, delay = 1000) {
  let timeoutId = null

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import { Controller } from "@hotwired/stimulus"

/*

Example usage:

<div data-controller="form-submit-disabler" data-form-submit-disabler-disable-with-value="Creating..."
  <form data-form-submit-disabler-target="form">
    <button data-form-submit-disabler-target="submitButton">Create</button>
  </form>

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module QueryTrackable
  extend ActiveSupport::Concern

  #
  # Prints the number of queries and the time spent in milliseconds
  # Useful to track the performance of isolated classes
  #
  # Usage:
  #
  # class MyClass

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import { Controller } from '@hotwired/stimulus'

/*
  Disable a button when it is clicked

  Ps: Rails 7.0 has dropped UJS, so `data-disable-with` is no longer available

  Example usage:

  <%= button_to 'Confirm', foo_path, method: :post, class: "btn btn-warning", data: {controller: 'disable-with', 'disable-with-content-value' => 'Confirming...'} %>

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# frozen_string_literal: true

# put this file at .rubocop/cop/naming/short_variable_name.rb
# then ensure you have the following in .rubocop.yml:
#
# require:
#   - .rubocop/cop/naming/short_variable_name.rb
# 
# Naming/ShortVariableName:
#   Enabled: true

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# frozen_string_literal: true

# put this file at .rubocop/cop/rspec/redundant_require_rails_helper.rb
# then ensure you have the following in .rubocop.yml:
#
# require:
#   - .rubocop/cop/rspec/redundant_require_rails_helper.rb
# 
# RSpec/RedundantRequireRailsHelper:
#   Enabled: true

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# app/jobs/job_debouncer.rb
module JobDebouncer
  extend ActiveSupport::Concern

  class_methods do
    def perform_later_once(*args, wait_time: 15.seconds)
      job_key = "job_debouncer_#{self}_#{args}"

      return if Rails.cache.exist?(job_key)

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Prerequisites

• Ruby
• Git
• Standard

Create a git pre commit hook and give it permission to execute:

touch .git/hooks/pre-commit && chmod +x .git/hooks/pre-commit

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# For more: https://github.com/ruby-concurrency/concurrent-ruby
num_threads = Concurrent.processor_count # or whatever you prefer like 4
thread_pool = Concurrent::FixedThreadPool.new(num_threads)

products = Product.all

executors = products.map { |product|
  Concurrent::Future.execute({executor: thread_pool}) do
    p "processing #{product.id}"
  end

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class Array
  # Few types of normalizations
  # https://developers.google.com/machine-learning/data-prep/transform/normalization

  def normalize
    return if self.empty?

    x_min, x_max = self.minmax
    dx = (x_max-x_min).to_f