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# Sample implementation of quicksort and mergesort in ruby | |
# Both algorithm sort in O(n * lg(n)) time | |
# Quicksort works inplace, where mergesort works in a new array | |
def quicksort(array, from=0, to=nil) | |
if to == nil | |
# Sort the whole array, by default | |
to = array.count - 1 | |
end |
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# Here's a contrived example of a LEFT JOIN using ARel. This is an example of | |
# the mechanics, not a real-world use case. | |
# NOTE: In the gist comments, @ozydingo linked their general-purpose ActiveRecord | |
# extension that works for any named association. That's what I really wanted! | |
# Go use that! Go: https://gist.github.com/ozydingo/70de96ad57ab69003446 | |
# == DEFINITIONS | |
# - A Taxi is a car for hire. A taxi has_many :passengers. | |
# - A Passenger records one person riding in one taxi one time. It belongs_to :taxi. |
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# if you want to monkey patch every controller, put this in initializers/active_admin.rb | |
ActiveAdmin::ResourceController.class_eval do | |
include ActiveAdmin::CSVStream | |
end |
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require "bundler/inline" | |
gemfile do | |
gem "rspec" | |
end | |
require "rspec/autorun" | |
RSpec.describe "inline Bundler and autorun RSpec" do | |
it "is convenient for self-contained examples & bug repros" do |