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@al2o3cr
al2o3cr / README.md
Created May 23, 2021
Solution for "four fours" problem
View README.md

Fours

A partial solution to the problem posed here: https://twitter.com/mikelikesbikes/status/1396159019837018117

This solution represents the expressions in reverse Polish notation (RPN) - see also Forth and HP48s.

The version presented here does NOT produce all values from 1 to 100, as it does not use enough operators.

Extending the search to additional operators only requires adding the value to @operators and a clause to eval to handle it.

View response.js
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@al2o3cr
al2o3cr / README.md
Created Jun 25, 2018
STI method generation optimization
View README.md

Reducing STI memory usage

if there are many STI child classes, ActiveRecord generates methods for each one individually. This is wasteful in the typical case, since all the children share the same underlying columns.

The small patch included here causes those methods to instead be generated in the parent class, shared amongst all the subclasses.

DO NOT use this if you call methods like attribute :foo to adjust the typecasting of columns in individual models.

@al2o3cr
al2o3cr / test_association_save.rb
Last active Sep 29, 2017
Test case for rails/rails #28536
View test_association_save.rb
# frozen_string_literal: true
begin
require "bundler/inline"
rescue LoadError => e
$stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
raise e
end
gemfile(true) do
@al2o3cr
al2o3cr / test_aliased_through.rb
Created Jan 14, 2017
Reproduction script for rails/rails #27666
View test_aliased_through.rb
begin
require "bundler/inline"
rescue LoadError => e
$stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
raise e
end
gemfile(true) do
source "http://rubygems.org"
# Activate the gem you are reporting the issue against.
View 💩 🚌👏 .rb
require 'thwait'
class Voice
BASELINE = %w( there is no - poop ing - on - the bus - )
VOICES = `say -v '?'`.lines.map { |line| line.split.first }
attr_reader :voice_name, :rate
def initialize(voice_name, rate)
@i = 0
View README.md
@al2o3cr
al2o3cr / test_case.rb
Created Sep 20, 2015
inverse_of regression in 4.2
View test_case.rb
begin
require 'bundler/inline'
rescue LoadError => e
$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
raise e
end
gemfile(true) do
source 'https://rubygems.org'
# NOTE: tests pass on 4.1.x, fail on 4.2
@al2o3cr
al2o3cr / test_associations.rb
Created Sep 3, 2015
Attempted repro for rails/rails #21466
View test_associations.rb
begin
require 'bundler/inline'
rescue LoadError => e
$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
raise e
end
gemfile(true) do
source 'https://rubygems.org'
gem 'activerecord', '4.2.4'
@al2o3cr
al2o3cr / test_association.rb
Last active Sep 3, 2015
Issue found investigating rails/rails #21466
View test_association.rb
begin
require 'bundler/inline'
rescue LoadError => e
$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
raise e
end
gemfile(true) do
source 'https://rubygems.org'
# NOTE: test passes on 4.1.13, fails against 4.2.0+