| // 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 |
I recently had to upgrade my blog, which involved changes such as:
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.
| 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 | |
| -- 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 |
| Some#method |
| // Usage: | |
| // | |
| // function loader() { | |
| // return new Promise((resolve) => { | |
| // if (process.env.LAZY_LOAD) { | |
| // require.ensure([], (require) => { | |
| // resolve(require('./SomeComponent').default); | |
| // }); | |
| // } | |
| // }); |
| 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 |
| # 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] |
