Peter Solnica solnic

Too long for a tweet...so, I tweeted this:

"One trend I'm observing is a lot of rubyists being fed up with messy ruby ecosystem are getting excited or even switch to clojure."

People asked me to comment further, so here it goes. First of all I said I'm seeing a trend, which is a fact. I know people who are learning Clojure (and other languages like some people pointed out) hoping to switch from Ruby or they even already left Ruby. Those people got tired of something I called "a messy ecosystem". Maybe not the best selection of words, I dunno. I meant that some people, myself included, find ruby ecosystem - which consists of multiple VMs, practically one web framework and a gazillion of libraries from which huge amount are only semi-working - to be a mess where it's hard to pick up a solid stack to solve bigger problems.

I really don't have time (which is a shame) to come up with some specific details. I could maybe only quickly describe what we're dealing with now at gitorious.org which is being upgraded t

https://github.com/rom-rb/rom-mapper

FeatureEnvy in Header#mapping
NestedIterators in Header#keys + overall complexity
TooManyStatements in Header.build
TooManyStatements in Mapper.build

https://github.com/rom-rb/rom-relation

FeatureEnvy in Mapping#build_relation

	class Result
	attr_reader :value, :error

	class Success < Result
	def initialize(value)
	@value = value
	end

	def >(f)
	f.call(value)

	# without unique column names this is what you need to do to make sure the result set has correct values and there
	# are no name clashes
	DB[:users].
	join_table(:inner, :tasks, user_id: :users__id).
	select(:tasks__id___task_id, :users__id___users_id)

	# versus this, if we had unique column names by default
	DB[:users].natural_join(:tasks).select(:task_id, :user_id)

	# https://github.com/rom-rb/rom/blob/reboot/benchmarks/basic.rb

	Calculating -------------------------------------
	schema.users.to_a 20 i/100ms
	mappers.users.to_a 17 i/100ms
	ARUser.all.to_a 10 i/100ms
	-------------------------------------------------
	schema.users.to_a 210.7 (±9.5%) i/s - 1060 in 5.074291s
	mappers.users.to_a 173.8 (±9.2%) i/s - 867 in 5.026702s
	ARUser.all.to_a 102.3 (±5.9%) i/s - 510 in 5.004413s

	Bundler could not find compatible versions for gem "rspec-core":
	In Gemfile:
	mutant-rspec (>= 0) ruby depends on
	rspec-core (~> 2.14.1) ruby

	rspec-rails (~> 3.0) ruby depends on
	rspec-core (3.0.2)

	require 'pathname'

	ROOT = Pathname(__FILE__).expand_path.join('../..')

	require 'rom'

	class Post
	include Equalizer.new :id, :title, :body, :comments
	attr_accessor :id, :title, :body, :comments
	end

	$LOAD_PATH.unshift './lib'

	require 'axiom-sql-generator'

	users = Axiom::Relation::Base.new(:users, [[:id, Integer], [:name, String]])

	def compile_sql(relation)
	sql_ast = Axiom::SQL::Processor.call(relation)
	sql_str = SQL::Generator.generate(sql_ast)

	require 'rom'
	require 'anima'

	class User
	include Anima.new(:id, :name, :tasks)
	end

	class Task
	include Anima.new(:title)
	end

	ROM::Relation#delete:/mnt/hgfs/!%home!%vagrant!%rom-rb/rom/rom-relation/lib/rom/relation.rb:144
	................
	(16/16) 100% - 4.84s
	ROM::Relation#drop:/mnt/hgfs/!%home!%vagrant!%rom-rb/rom/rom-relation/lib/rom/relation.rb:249
	...........
	(11/11) 100% - 3.22s
	ROM::Relation#each:/mnt/hgfs/!%home!%vagrant!%rom-rb/rom/rom-relation/lib/rom/relation.rb:85
	.........................
	(25/25) 100% - 6.81s
	ROM::Relation#first:/mnt/hgfs/!%home!%vagrant!%rom-rb/rom/rom-relation/lib/rom/relation.rb:214