kyle-eshares

defmodule SimpleTCP do
  use Application

  def start(_type, _args) do
    import Supervisor.Spec, warn: false

    children = [
      worker(SimpleTCP.Worker, [8000])
    ]

kyle-eshares

defmodule SimpleTCP.Worker do

  import Socket

  def start_link(port) do
    pid = spawn_link(fn -> init(port) end)
    {:ok, pid}
  end

  def init(port) do

kyle-eshares

defmodule SimpleTCP.Sender do
  use GenServer
  import Socket

  def start_link(socket, opts \\ []) do
    GenServer.start_link(__MODULE__, [socket: socket], opts)
  end

  def init(socket) do
    # Register the process with gproc and subcscribe to :something

kyle-eshares

defmodule SimpleTCP.Worker do

  import Socket

  def start_link(port) do
    pid = spawn_link(fn -> init(port) end)
    {:ok, pid}
  end

  def init(port) do

kyle-eshares

Project Gutenberg's The Adventures of Sherlock Holmes, by Arthur Conan Doyle

This eBook is for the use of anyone anywhere at no cost and with
almost no restrictions whatsoever.  You may copy it, give it away or
re-use it under the terms of the Project Gutenberg License included
with this eBook or online at www.gutenberg.net


Title: The Adventures of Sherlock Holmes

kyle-eshares

from django.db import models
from django.db.models import signals
from django.contrib.admin.utils import NestedObjects

class AppQuerySet(models.QuerySet):

    def delete(self, **kwargs):
        return self.update(is_void=True)

class AdvancedManager(models.Manager):

kyle-eshares

from django.db import models
from django.db.models import signals
from django.contrib.admin.utils import NestedObjects

class AppQuerySet(models.QuerySet):
    def delete(self, **kwargs):
        return self.update(is_void=True)

class AppManager(models.Manager):
    queryset_class = AppQuerySet

kyle-eshares

>>> book.author.name
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/Users/kyle/orm_test/library/models.py", line 18, in __get__
'Use `select_related` or `fetch_{rel}`'.format(rel=self.field.name)
RelationNotLoaded: Relation `author` not loaded. Use `select_related` or `fetch_author`

#  We explicitly fetch the resource
>>> book.fetch_author()
<Author: Author object>

kyle-eshares

#  Retrieve values as a dictionary
>>> Book.objects.values('title', 'author__name')
<QuerySet [
{'author__name': u'Nikolai Gogol', 'title': u'The Overcoat'}, {'author__name': u'Leo Tolstoy', 'title': u'War and Peace'}]>
#  Retrieve values as a tuple
>>> Book.objects.values_list('title', 'author__name')
<QuerySet [(u'The Overcoat', u'Nikolai Gogol'),
(u'War and Peace', u'Leo Tolstoy')]>
>>> Book.objects.values_list('title')
<QuerySet [(u'The Overcoat',), (u'War and Peace',)]>

kyle-eshares

>>> from django.db import connection
>>> connection.queries
[]
>>> Author.objects.all()
<QuerySet [<Author: Author object>]>
>>> connection.queries
[{u'time': u'0.002', u'sql': u'SELECT "library_author"."id", "library_author"."name" FROM "library_author" LIMIT 21'}]