davidchambers

decorate = (klass, methodName, fn) ->
  method = klass::[methodName]
  klass::[methodName] = (args...) ->
    method.apply this, args
    fn.apply this, args


# Example

decorate Array, 'push', (args...) ->

davidchambers

#!/usr/bin/env python
import json
import re
import subprocess
import sys


if len(sys.argv) > 1:
    lsregister = sys.argv[1]
else:

davidchambers

A woman has two children, (at least) one of whom is a boy. What's the probability that she has two boys?

       B    B-B   1/4
      /
     /
    B
   / \
  /   \
 /     G    B-G   1/4

/

davidchambers

flatter

flatter is a command-line tool for determining a source file's "indentedness", which provides a rough indication of how well factored the code is.

$ flatter src

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cheerio = require 'cheerio'
request = require 'request'
tutor   = require 'tutor'


request 'http://www.wizards.com/magic/tcg/events.aspx?x=mtg/event/playerschamp/2012/cubepool',
  (err, res, body) ->
    throw err if err?
    $ = cheerio.load body
    names = $('a.nodec').map -> @text()

davidchambers

# Takes a box (an array) and a function, f, which takes a continuation.
# A sentinel is placed in the box, then f is invoked. When f calls its
# continuation, c, the box is inspected. Only if the sentinel is still
# in the box will c in turn call its continuation.
#
# If several asynchronous requests are made in quick succession, the
# responses may not be received in the order in which they were sent.
# This function makes it possible to define a function to be invoked
# *unless the request has been superseded by the time it completes*.
skip_continuation_if_superseded = (box, f) ->

davidchambers

• avoid unnecessary state
• favor pure functions over impure functions
• functions should not have surprising side effects
• give things meaningful names, and avoid aliases
• don't swallow unexpected errors

davidchambers

express = require 'express'


app = express()

app.param (name, arg) -> switch Object::toString.call arg
  when '[object RegExp]'
    (req, res, next, val) ->
      if arg.test val then next() else next 'route'

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FILES = (
    'foo.txt',
    'bar.txt',
    'baz.txt',
)


def getmetadata(path):
    return {'blah': True, 'quux': 42}

davidchambers

       ROUND 1

 Darryn 2 v 0 James
    Dan 2 v 0 Matt
   Doug 0 v 2 David

       ROUND 2

 Darryn 2 v 0 David
  James 2 v 1 Dan