joelnet

// Y Combinator
const Y = a => (b => b (b)) (b => a (c => b (b) (c)))

// isomorphic Church encoding/decoding
const Church = {
  to: n => f => x => Array.from (Array (n)).reduce (f, x),
  from: f => f (x => x + 1) (0)
}

const True = a => b => a

thbar

Using minitest to regression-test your Jekyll static site

I recently had to upgrade my blog, which involved changes such as:

• Replacing a sitemap plugin
• Upgrading from jekyll 2.5.3 to 3.8.4
• Upgrading from jekyll-assets 0.7.8 to 3.0.11
• (etc)

The upgrading process was not trivial, and some parts (e.g. RSS, sitemap, or twitter cards tags) are not immediately visible, so I decided to add unit tests on the generated content.

mostlyobvious

gem 'rails_event_store'
generate 'rails_event_store_active_record:migration'
rails_command 'db:migrate'
initializer 'rails_event_store.rb', <<-CODE
  Rails.configuration.to_prepare do
    Rails.configuration.event_store = RailsEventStore::Client.new
  end
CODE

marcocitus

-- Create the raw events table
CREATE TABLE page_views (
    site_id int,
    path text,
    client_ip inet,
    view_time timestamptz default now(),
    view_id bigserial
);

-- Allow fast lookups of ranges of sequence IDs

andrzejsliwa

  Some#method

lencioni

// Usage:
// 
// function loader() {
//   return new Promise((resolve) => {
//     if (process.env.LAZY_LOAD) {
//       require.ensure([], (require) => {
//         resolve(require('./SomeComponent').default);
//       });
//     }
//   });

mlafeldt

Shakespeare Sonnet++ Postmortem (incident #465)

Date

2015-10-21

Authors

• jennifer
• martym

hadees

module ArelHelpers
  extend self

  def self.included(base)
    base.extend self
  end

  def asterisk(arel_table_or_model)
    arel_table, columns = case arel_table_or_model
                          when Arel::Table

mostlyobvious

# Expectations:
# 
# * application code in /srv/myapp/current
# * ruby runtime in /srv/myapp/.rubies/ruby-2.3.0
# * unicorn.rb config specifies pid file location to /srv/myapp/current/unicorn.pid and working directory to /srv/myapp/current

[Unit]
Description=Sample unicorn app

[Service]

gajus

The issue:

..mobile browsers will wait approximately 300ms from the time that you tap the button to fire the click event. The reason for this is that the browser is waiting to see if you are actually performing a double tap.

(from a new defunct https://developers.google.com/mobile/articles/fast_buttons article)

touch-action CSS property can be used to disable this behaviour.

touch-action: manipulation The user agent may consider touches that begin on the element only for the purposes of scrolling and continuous zooming. Any additional behaviors supported by auto are out of scope for this specification.