trptcolin

# a little ditty for osx

function voices() {
  say -v "?" | cut -d" " -f1,2 | sed -e 's/ *$//'
}

function shuffle_for_stupid_osx_that_doesnt_have_it_built_in() {
  perl -MList::Util=shuffle -e 'print shuffle(<STDIN>);'
}

trptcolin

;; test/foobar/core_test.clj
(ns foobar.core-test
  (:require [clojure.test :refer :all]
            [foobar.core :as foobar]))

(deftest formats-intervals-properly
  (is (= "1" (foobar/format-interval [1])))
  (is (= "1-2" (foobar/format-interval [1 2])))
  (is (= "1-3" (foobar/format-interval [1 2 3]))))

trptcolin

Double Barrier Confusion

Recipe

The way I'm reading the Zookeeper Double Barriers recipe, the exit condition (for Leave) is that all children of the barrier node must be deleted before any given client process can complete the Leave operation.

So it seems to me that if a client process Enters the barrier after the minimum number of processes have joined the barrier, it can hold up previously-Entered client processes. I feel like a typical implementation of barriers might have the minimum # of processes equal to the total # of processes, so maybe this is an edge case? And maybe this is all totally OK and normal; I'm just looking to confirm/disconfirm my interpretation.

1. Am I thinking about this right? If so, is there actually a problem here? If not, why not?

Paper

trptcolin

[Tue Jan 13 11:59:12 2009] [notice] SELinux policy enabled; httpd running as context user_u:system_r:httpd_t:s0
[Tue Jan 13 11:59:12 2009] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[ pid=12103 file=ApplicationPoolServer.h:535 time=01/13/09 11:59:12.771 ]:
  *** WARNING: Could not create FIFO '/tmp/passenger_status.12103.fifo': Permission denied (13)
Disabling Passenger ApplicationPool status reporting.
[Tue Jan 13 11:59:12 2009] [error] *** Passenger could not be initialized because of this error: Could not connect to the ApplicationPool server: Connection reset by peer (104)
[Tue Jan 13 11:59:12 2009] [notice] Digest: generating secret for digest authentication ...
[Tue Jan 13 11:59:12 2009] [notice] Digest: done
[Tue Jan 13 11:59:12 2009] [notice] mod_python: Creating 4 session mutexes based on 256 max processes and 0 max threads.
[ pid=12107 file=ApplicationPoolServer.h:535 time=01/13/09 11:59:12.870 ]:

trptcolin

 #!/bin/bash
if [[ -z $1 ]]; then
  echo "Usage: $0 takes one argument, the project name."
  exit 0
else
  project=`basename $1`
fi

action="cd /srv/websites/$project; sudo -S rake db:migrate"
echo $action

trptcolin

#!/bin/bash

if [[ -z $1 ]]; then 
  echo "Usage: $0 takes one argument, the project name."
  exit 0
else
  project=`basename $1`
fi

action="sudo mongrel_rails cluster::restart -C /etc/mongrel_cluster/$project.yml"

trptcolin

def valid_phone
  [self.home_phone, self.mobile_phone, self.work_phone].each do |phone|
    if !phone.blank?
      return phone
    end
  end
  return ''
end

trptcolin

require 'rubygems'
require 'nokogiri'
require 'open-uri'

# the solution is only this simple since the last row doesn't get padded to fill out the table
doc = Nokogiri::XML(open('http://manifesto.softwarecraftsmanship.org'))
puts doc.css("#signatory_table td").length

trptcolin

// before:
bestScore = Math.max(bestScore, -minimax(child, depth - 1, otherPlayer);

// after:
otherPlayerScore = minimax(child, depth - 1, otherPlayer);
maxOtherPlayerScore = Math.max(otherPlayerScore, maxOtherPlayerScore);
bestScore = -maxOtherPlayerScore;

trptcolin

(load "/Users/colin/lib/test-manager/load.scm")

(define (factor-list index product factors)
  (cond ((< product 2)
         '())
        ((= 0 (modulo product index))
         (cons (cons index factors) (factor-list index (/ product index) factors)))
        (else
         (factor-list (+ index 1) product factors))))