iliabylich

require 'strscan'

class Result
  class Ok < self
    def or(&block)
      self
    end

    def and(&block)
      chained = block.call(value)

iliabylich

#!/usr/bin/env ruby

require 'bundler/setup'
require 'parser/current'
require 'pry'

def each_file
  return to_enum(:each_file) unless block_given?

  Dir['app/**/*.rb'].sort.each { |f| yield f }

iliabylich

# frozen_string_literal: true

# Cache store that gets automatically expired after each request
#
# @example
#   UsersCache = RequestStore::Cache.new(namespace: 'users')
#   UsersCache.read(:user1)
#   # => nil
#   UsersCache.fetch(:user1) { User.find(1) }
#   # => #<User id:1 ...>

iliabylich

./configure

alias dev-ruby-rebuild="make DESTDIR=./ruby_build uninstall && make && make DESTDIR=./ruby_build install"
alias dev-ruby="./ruby_build/usr/local/bin/ruby -I ./ruby_build/usr/local/lib/ruby/2.5.0 -I ./ruby_build/usr/local/lib/ruby/2.5.0/x86_64-darwin17"
alias dev-irb="dev-ruby -e 'binding.irb'"

iliabylich

require 'parslet'
require 'json'

class JSONParser < Parslet::Parser
  rule(:object) { str('{') >> spaces? >> object_content.maybe.as(:object) >> spaces? >> str('}') }
  rule(:object_content) { (kv_pair >> (comma >> kv_pair).repeat).maybe }
  rule(:kv_pair) { (key.as(:key) >> spaces? >> str(':') >> spaces? >> value.as(:value)).as(:kv_pair) }
  rule(:key) { string }
  rule(:value) { string | float | integer | object | array | _true | _false | null }
  rule(:string) { str('"') >> (str('"').absent? >> any).repeat.as(:string) >> str('"') }

iliabylich

# racc json_parser.rb -o out.rb -v -g  && ruby -rpry -rstrscan out.rb

class JsonParser
  token tDOT tQUOTE
        tLCURLY tRCURLY
        tLBRACK tRBRACK
        tCOMMA tCOLON
        tSTRING tNUMBER
        kTRUE kFALSE kNULL
rule

iliabylich

# gem install activesupport
# runner.rb | sh

require 'active_support/values/time_zone'

ActiveSupport::TimeZone::MAPPING.values.each do |zone|
  puts "TZ=#{zone} opal -e 'print \"#{zone}: \"; puts Time.at(9999999).yday'"
end

iliabylich

apt-key adv --keyserver keys.gnupg.net --recv-keys 1C4CBDCDCD2EFD2A
echo "deb http://repo.percona.com/apt trusty main" > /etc/apt/sources.list.d/percona.list
echo "deb-src http://repo.percona.com/apt trusty main" >> /etc/apt/sources.list.d/percona.list
apt-get update

apt-get install -y percona-server-server-5.6

mysql -e "CREATE FUNCTION fnv1a_64 RETURNS INTEGER SONAME 'libfnv1a_udf.so'"
mysql -e "CREATE FUNCTION fnv_64 RETURNS INTEGER SONAME 'libfnv_udf.so'"
mysql -e "CREATE FUNCTION murmur_hash RETURNS INTEGER SONAME 'libmurmur_udf.so'"

iliabylich

config.sync =
  # ...

  couchDB:
    urlRoot: 'http://localhost:5984'
    options:
      dataType: 'json'
      contentType: 'application/json; charset=UTF-8'

iliabylich

module ComparesByValue
  def <=>(other)
    self.value <=> other.value
  end
end

class A < Struct.new(:value)
  include ComparesByValue
  include Comparable
end