bblanchon

from django.db.models import OuterRef

weapons = Weapon.objects.filter(unit__player_id=OuterRef('id'))
units = Unit.objects.filter(player_id=OuterRef('id'))

qs = Player.objects.annotate(weapon_count=SubqueryCount(weapons),
                             rarity_sum=SubquerySum(units, 'rarity'))

scottswaaley

/* Center of Gravity Finder

This script will find the center of gravity (centroid) of all closed paths in the selection set. It was built for a specific purpose so does not have much error
handling. For example, if you get errors it may be the result of the selection set containing compound shapes or a self-intersecting polygon. 

References for the math:
http://paulbourke.net/geometry/polygonmesh/ (Calculating the area and centroid of a polygon)
https://en.wikipedia.org/wiki/Centroid#Centroid_of_polygon

Save this file with a jsx extension and place in your Illustrator/Presets/en_US/Scripts folder. You can then access it from the File > Scripts menu

kylemanna

README

The example below creates a TCP server listening on a stream (i.e. SOCK_STREAM) socket. A similar approach can be followed to create a UDP server on a datagram (i.e. SOCK_DGRAM) socket. See man systemd.socket for details.

An example server

Create an simple echo server at ~/tmp/foo/serve.py.

kosyfrances

To copy database from one heroku app to another -

heroku pg:backups capture [database_name]
heroku pg:backups restore $(heroku pg:backups public-url --app source_app) DATABASE_URL --app target_app

You can refer to https://devcenter.heroku.com/articles/heroku-postgres-backups for more information.

To copy database from local to heroku - Dump your local database in compressed format using the open source pg_dump tool: PGPASSWORD=mypassword pg_dump -Fc --no-acl --no-owner -h localhost -U myuser mydb > mydb.dump where myuser is your database username and mydb is the database name.

zekesonxx

{
  "A": "Alfa",
  "B": "Bravo",
  "C": "Charlie",
  "D": "Delta",
  "E": "Echo",
  "F": "Foxtrot",
  "G": "Golf",
  "H": "Hotel",
  "I": "India",

juristr

/* 
  This script hides the navbar '.js-navbar'
  when scrolling downwards on a page and shows it again
  when scrolling upwards
*/
$(function(){
  var $nav = $('.js-navbar'),
      _hideShowOffset = 20,
      _lastScroll = 0,
      _detachPoint = 50;

ElliotChong

# Adjust device pixel ratio
setMaximumPixelRatio = (p_maximumRatio=1) ->
	canvas = document.createElement('canvas')
	context = canvas.getContext('2d')
	devicePixelRatio = window.devicePixelRatio || 1
	backingStoreRatio = context.webkitBackingStorePixelRatio || context.mozBackingStorePixelRatio || context.msBackingStorePixelRatio || context.oBackingStorePixelRatio || context.backingStorePixelRatio || 1
	pixelRatio = devicePixelRatio / backingStoreRatio

	for className in ["HitCanvas", "SceneCanvas", "Canvas"]
		Kinetic[className].prototype.init = ((p_method) -> (p_config={}) ->

dypsilon

Frontend Development

Attention: the list was moved to

https://github.com/dypsilon/frontend-dev-bookmarks

This page is not maintained anymore, please update your bookmarks.

---

n3wtron

#!/usr/bin/python
'''
	Author: Igor Maculan - n3wtron@gmail.com
	A Simple mjpg stream http server
'''
import cv2
import Image
import threading
from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer
from SocketServer import ThreadingMixIn

jasonroelofs

] wc -l domains.txt 
     783 domains.txt

] time go run domain_lookup_parallel.go

real	0m5.743s
user	0m0.359s
sys	0m0.355s

] time go run domain_lookup_sequential.go