ryanlecompte

[1] pry(main)> def foo
[1] pry(main)*   binding
[1] pry(main)* end  
=> nil
[2] pry(main)> b = foo { puts 'hi!' }
=> #<Binding:0x007f8b7a0e2ec0>
[3] pry(main)> b.eval('Proc.new').call
(pry):5: [BUG] Segmentation fault
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin11.0.1]

ryanlecompte

Using /Users/ryan/.rvm/gems/ruby-1.9.2-p290
[1] pry(main)> class Foo
[1] pry(main)*   define_method(:hmm, proc { |x,y| p [x,y] })
[1] pry(main)* end  
=> #<Proc:0x007f8cab911060@(pry):2 (lambda)>
[2] pry(main)> Foo.new.hmm(1)
ArgumentError: wrong number of arguments (1 for 2)
from (pry):2:in `block in <class:Foo>'
[3] pry(main)> Foo.new.hmm(1,2)
[1, 2]

ryanlecompte

big_hash = 10_000.times.with_object({}) { |i, hash| hash[i] = Array.new(i) }
Benchmark.bm do |x|
  x.report("values.min")   { big_hash.values.min }
  x.report("each_value.min") { big_hash.each_value.min }
end

__END__

$ ruby speed.rb 
      user     system      total        real

ryanlecompte

    def process(msg)
      klass = constantize(msg['class'])
      invoke_chain(klass.new, msg)
      @boss.processor_done!(current_actor)
    end

    def invoke_chain(worker, msg)
      chain = Sidekiq::Middleware::Chain.retrieve.dup
      traverse_chain = lambda do
        if chain.empty?

ryanlecompte

require 'aws-sdk'

module RequestDumper
  def new(*args, &block)   
    super.extend(DumpRequests)
  end

  module DumpRequests
    def request(*args, &block)
     puts "SENDING: #{args.first.body}"

ryanlecompte

require 'socket'
require 'thread'

# Example of a "threaded preforking" server using multiple acceptor threads
# and a pool of worker threads to service the actual requests. Note
# that this is similar to a real preforking server that uses Kernel#fork
# to service requests concurrently with a single listener socket. The only
# difference is that instead of multiple forked processes, we use multiple
# acceptor threads.
class Server

ryanlecompte

Server created with 5 acceptors and 10 workers.
Exception in thread "RubyThread-15: server.rb:1" java.lang.NullPointerException
	at org.jruby.ext.socket.RubyTCPServer.accept(RubyTCPServer.java:180)
	at org.jruby.ext.socket.RubyTCPServer$i$0$0$accept.call(RubyTCPServer$i$0$0$accept.gen:65535)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:133)
	at server.chained_5_rescue_2$RUBY$SYNTHETICrun_acceptors(server.rb:35)
	at server.chained_4_rescue_1$RUBY$SYNTHETICrun_acceptors(server.rb:34)
	at server.block_1$RUBY$run_acceptors(server.rb:33)
	at server$block_1$RUBY$run_acceptors.call(server$block_1$RUBY$run_acceptors:65535)
	at org.jruby.runtime.CompiledBlock19.yield(CompiledBlock19.java:163)

ryanlecompte

Server launched: 10 acceptors, 10 workers.

Exception in thread "RubyThread-34: /Users/ryan/fun/timeserver/lib/timeserver/server.rb:37" java.nio.channels.IllegalBlockingModeException
	at java.nio.channels.spi.AbstractSelectableChannel.configureBlocking(AbstractSelectableChannel.java:257)
	at org.jruby.util.io.SelectBlob.tidyUp(SelectBlob.java:352)
	at org.jruby.util.io.SelectBlob.goForIt(SelectBlob.java:94)
	at org.jruby.RubyIO.select_static(RubyIO.java:3398)
	at org.jruby.RubyIO.select(RubyIO.java:3394)
	at org.jruby.RubyIO$INVOKER$s$0$3$select.call(RubyIO$INVOKER$s$0$3$select.gen:65535)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:69)

ryanlecompte

[1] pry(main)> show-method Array#dup

From: object.c in Ruby Core (C Method):
Number of lines: 14
Owner: Kernel
Visibility: public

VALUE
rb_obj_dup(VALUE obj)
{

ryanlecompte

class Foo
  def foo; "foo" end
  def bar; "bar" end
  def baz; "baz" end
end

class Bar < Foo
  attr_accessor :plural

  def self.wrap(*methods)