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web: (while true; do echo MARK $(date --iso-8601=seconds); sleep 5; done) & ruby --version; bin/rackup -Ilib -s puma rackup.ru -p $PORT

# Or slightly more clearly

web: rake resqueue:worker & ruby --version; bin/rackup -Ilib -s puma rackup.ru -p $PORT

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require 'zlib'
require 'socket'
require 'thread'

WORKERID_BITS = 10 
MAX_WORKER_ID = -1 ^ (-1 << WORKERID_BITS)
SEQUENCE_BITS = 12
MAX_SEQUENCE = -1 ^ (-1 << SEQUENCE_BITS)

SINCE_MILLIS = Time.utc(2012, 1, 1).to_f * 1000

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Mutant configuration:
Matcher:   #<Mutant::Matcher::Method::Instance identification="SRSRB::CardEditorApp#card_models_as_dictionary">
Filter:    Mutant::Mutation::Filter::ALL
Strategy:  #<Mutant::Strategy::Rspec::Full>
Subject: SRSRB::CardEditorApp#card_models_as_dictionary:/Users/cez/projects/srs-rb/lib/srsrb/rackapp.rb:110
Alive: rspec:noop:SRSRB::CardEditorApp#card_models_as_dictionary:/Users/cez/projects/srs-rb/lib/srsrb/rackapp.rb:110:24ec0 (0.71s)
Killed: rspec:SRSRB::CardEditorApp#card_models_as_dictionary:/Users/cez/projects/srs-rb/lib/srsrb/rackapp.rb:110:3e242 (0.43s)
Killed: rspec:SRSRB::CardEditorApp#card_models_as_dictionary:/Users/cez/projects/srs-rb/lib/srsrb/rackapp.rb:110:5d14b (0.43s)
Killed: rspec:SRSRB::CardEditorApp#card_models_as_dictionary:/Users/cez/projects/srs-rb/lib/srsrb/rackapp.rb:110:3aca1 (0.42s)
Killed: rspec:SRSRB::CardEditorApp#card_models_as_dictionary:/Users/cez/projects/srs-rb/lib/srsrb/rackapp.rb:110:d8c97 (0.45s)

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1.9.3p0 :004 > require 'pp'
 => true
1.9.3p0 :002 > p = proc { |a| pp proc_args: a }
 => #<Proc:0x0000010090b838@(irb):2>
1.9.3p0 :010 > p.call(1,2)
{:proc_args=>1}
1.9.3p0 :008 > stabby = ->(a) { pp stabby_args: a }
 => #<Proc:0x00000101099410@(irb):8 (lambda)>
1.9.3p0 :009 > stabby.call(1,2)
ArgumentError: wrong number of arguments (2 for 1)

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#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

void
handler(int signum)
{
   printf("Catching signal %d\n",signum);
   sleep(1);

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(* See http://matt.might.net/articles/cek-machines/ *)

type var = string

type term =
  Ref of var
| Lam of lambda
| App of term * term

and lambda = L of var * term

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user=> (doseq [f [(fn [& r] r) list vector]] (time (dotimes [_ 10000000] (f 1 2))))
"Elapsed time: 89.534 msecs"
"Elapsed time: 1619.788 msecs"
"Elapsed time: 659.573 msecs"
nil
user=> (doseq [f [(fn [& r] r) list vector]] (time (dotimes [_ 100000000] (f 1 2))))
"Elapsed time: 284.97 msecs"
"Elapsed time: 16061.555 msecs"
"Elapsed time: 6207.421 msecs"
nil

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Ruby Cake

A quick experiment trying to replicate the cake pattern example from Jonas Bonér's post Real-World Scala: Dependency Injection (DI) in ruby.

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It's quite easy to draw parallels between the Alan Kay's definition of objects (ie: the important part is messaging) and actors as found in Erlang (independent processes communicating via messages). And one parallel seems to be between the supervisor, and factories (as supervisors are responsible for the lifecycle of it's child processes, as a factory can be for objects, I think).

So, if you have processes A and B supervised by S, but B needs to send messages to A, then it might seem like a good idea to dynamically create both in Module:start_link, eg:

-module(something_sup).

-behavior(supervisor).

start_link() ->

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: cez@rhk; (cd /usr/local/ && git remote -v)  
origin  https://github.com/mxcl/homebrew.git (fetch)
origin	https://github.com/mxcl/homebrew.git (push)
: cez@rhk;