schipiga

  The book is devoted to metaprogramming. To be brief, metaprogramming is writing code that writes code.
Book is divided to two parts: big and small. The big part is devoted to metaprogramming in Ruby directly.
But the small little touches metaprogramming in Ruby on Rails. Let's consider the big (and the most
important) part. It consists of 5 parts, title as work days of week. When reading the book it assumes,
that the reader learns something new every day and mastering metaprogramming in five days. Of course,
it's not possible to become a professional in 5 days, or 24 hours or some another short term, Yet the
style of narration does not detract from the merits of the book, but vice versa. They support direct
dialogue with the reader, proposing to solve some of tasks themselves. The book examines specific examples.
But truly say, only in the fifth chapter the author refers directly to the heart of metaprogramming. In the
first four chapters he trains the reader to the Ruby conception. 

schipiga

workon_virtualenv() {
  if [[ $(git status 2>/dev/null) ]] || [[ $(git status 2>/dev/null) ]]
  then
    deactivate >/dev/null 2>&1
    $(cat $(hg root 2>/dev/null)/.pvmrc) 1>/dev/null || $(cat $(git rev-parse --show-toplevel 2>/dev/null)/.pvmrc) 1>/dev/null
    # source $(hg root 2>/dev/null)/.env/bin/activate 2>/dev/null || source $(git rev-parse --show-toplevel 2>/dev/null)/.env/bin/activate 2>/dev/null
  else
    deactivate >/dev/null 2>&1
  fi  
}

schipiga

parse_git_branch() {
  git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(git::\1)/'
}
parse_svn_branch() {
  parse_svn_url | sed -e 's#^'"$(parse_svn_repository_root)"'##g' | awk -F / '{print "(svn::"$1 "/" $2 ")"}'
}
parse_svn_url() {
  svn info 2>/dev/null | grep -e '^URL*' | sed -e 's#^URL: *\(.*\)#\1#g '
}
parse_svn_repository_root() {

schipiga

[extensions]
color =
pager =

[color]
status.modified = cyan bold
status.added = green bold
status.removed = red bold
status.deleted = red bold
status.unknown = magenta bold

schipiga

def tee(iterable, n=2):
  try:
    iter(iterable)
  except TypeError:
    raise Exception("%s isn't iterable, silly boy :)" % iterable)
  def f(iterable):
    for i in iterable:
      yield i
  return [f(iterable) for i in xrange(n)]

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def peekable(generator):
  import types
  
  if not isinstance(generator, types.GeneratorType):
    raise Exception("%s isn't generator, silly girl ;)" % generator)
    
  def stop_iterator(func):
    def wrapper(*args, **kwgs):
      try:
        return func(*args, **kwgs)

schipiga

from threading import Thread

class Subscriber(object):

    _instance = None

    def __new__(cls):
        if not cls._instance:
            cls._instance = super(Subscriber, cls).__new__(cls)
            cls._instance.init()

schipiga

import json

from celery import Celery

try:
    import cPickle as pickle
except ImportError:
    import pickle

schipiga

We couldn’t find that file to show.

schipiga

def run_once(func):
    setattr(func, 'was_launched', False)
    def wrapper(*args, **kwgs):
        if getattr(func, 'was_launched'):
            return
        setattr(func, 'was_launched', True)
        return func(*args, **kwgs)
    return wrapper