kjwierenga

# steps I took
 
$ git clone [email protected]:kjwierenga/rufus-scheduler.git
$ cd rufus-scheduler
$ git branch -a
* master
  origin/HEAD
  origin/master
  origin/twozero
$ git remote add upstream git://github.com/jmettraux/rufus-scheduler.git

kjwierenga

#
# Steps I took to re-sync my fork of rufus-scheduler to the
# new branches on jmettraux/rufus-scheduler after the following renames:
#
#  master  -> onezero
#  twozero -> master
#

$ git clone [email protected]:kjwierenga/rufus-scheduler.git # fresh clone of my fork
$ cd rufus-scheduler

kjwierenga

def schedule_event(event)

  now = Time.now

  # Determine the next occurrence starting at (Time.now - event.duration) to 
  # catch the current occurence where start_at <= Time.now but end_at > Time.now.
  #
  # When occurrence == nil, this means the event will never occur.
  occurrence = event.occurrences(:starting => now - event.duration, :count => 1)
  return if occurrence.nil?

kjwierenga

Entry.transaction do
  Playlist.all.each do |playlist|
    if positions_max = playlist.entries.maximum(:position)
      ActiveRecord::Base.connection.execute("
        UPDATE entries SET position = #{positions_max + 1} - position
        WHERE playlist_id = #{playlist.id}")
    end
  end
end

kjwierenga

set(:branch) do
  if :production == stage
    branch = Capistrano::CLI.ui.ask("#{`git branch`}\n\nWhich branch do you want to deploy?: ")
    raise "Error: The master branch cannot be deployed to production." if 'master' == branch
  else
    `git branch | grep ^* | sed s/\\*\\ //`.chomp # use current active branch for staging
  end
end

kjwierenga

> date -d-1day
Mon Sep  6 09:08:43 CEST 2010
> date -d-1day +%Y%m
201009

kjwierenga

Getting up and running with OS X, Textmate & Scheme
===================================================

SCHEME
======

I ran across two implementations of Scheme which appear to work well with OS X.
mit-scheme & PLT Scheme.

I was able to install mit-scheme from darwin ports ( sudo port install mit-scheme)

kjwierenga

def counter(start, inc)
  lambda do
    current = start
    start += inc
    current
  end
end

result = counter(10, 2)

kjwierenga

def returning(value, &block)
  yield
  value
end

def counter(start, inc)
  lambda do
    returning start do
      start += inc
    end

kjwierenga

# My final solution to 'Closures' exercise at the
# Scottish Ruby Conference - Ruby Tutorial
# by Chad Fowler and Keavy McMinn.

# The returning keyword/proc is not defined in Ruby 1.8. Define it here
#
def returning(value, &block)
  yield
  value
end