Skip to content

Instantly share code, notes, and snippets.


Peter Lyons focusaurus

View GitHub Profile
focusaurus /
Created Mar 30, 2011
CoffeeScript Introspection Function
debug = (obj, seen)->
printProps = (obj)->
#Edge case to handle is [1,2,3][9] = 'foo'
#Need to factor the conditional out to check if the prop is a number less
#than the array's length
return ((if ! /^\d+$/.test prop then prop + ": " + debug(obj[prop], seen) \
else '') for prop of obj).join(', ')
seen = seen or []
if obj in seen
View default.rb
require 'rubygems'
require 'json'
CONF_PATH = '/tmp/clouddial_conf.json'
cookbook_file CONF_PATH do
source File.basename CONF_PATH
mode '0444'
backup false
focusaurus /
Created Oct 15, 2011
Closures in coffeescript
makeLogger = (prefix) ->
(message) -> console.log "#{prefix.toUpperCase()}: #{message}"
fooLogger = makeLogger 'foo'
barLogger = makeLogger 'bar'
fooLogger n for n in [1..10]
barLogger n for n in [1..10]
fooLogger n for n in [11..20]
focusaurus / tipper.js
Created Mar 14, 2012
Clearest example of closures ever?
View tipper.js
var tipper = function (percentage) {
return function tip(total) {
return total + (total * (percentage / 100));
var generous = tipper(20);
var normal = tipper(18);
var stingy = tipper(8);
focusaurus /
Created Jul 19, 2012
Add named get/set methods to backbone models
addConvenienceMethods = ->
for prop, value of this.attributes
((prop) ->
#Define a setter/getter function
this[prop] = (newValue...) ->
if newValue.length
this.set prop, newValue[0]
return this
return this.get prop
focusaurus / gist:3165384
Created Jul 23, 2012
Syntax for comments/docs vs. disabling code blocks
View gist:3165384
So the question was: should programming languages use a different syntax (or character) for comments intended to be read by developer vs comments whose purpose is to disable code. For example, in my mind, these two scenarios are semantically entirely different intents:
# Add 2 px to account for border
width += 2
vs ......
#def someFunc():
# pass
focusaurus / gist:3717688
Created Sep 13, 2012
Make backbone.js friendly for use with async.js
View gist:3717688
//Note, works with either Backbone.Model or Backbone.Collection
//Returns a function that will fetch the provided model and works with
//async's callback API
function asyncFetch(model) {
return function (callback) {
success: function (model) {callback(null, model);},
error: function (model, response) {callback(response);}
focusaurus /
Created Oct 17, 2012
Transfer clipboard text from one mac to another via netcat
ncsend() {
local DEST_HOST="${1-smair}"
pbpaste | nc "${DEST_HOST}" "${NCSEND_PORT}"
ncreceive() {
while true
nc -l "${NCSEND_PORT}" | tee /dev/tty | pbcopy
focusaurus /
Created Dec 4, 2012
How I keep OSX plist prefs in my dotfiles repo
#Export like this: prefs export iterm
#import like this: prefs import iterm
prefs() {
local OP="${1}"
case "${OP}" in
focusaurus / emitter_demo.js
Created Dec 6, 2012
Emit events directly from a node module while also exporting functions
View emitter_demo.js
var emitterModule = require('./emitter_module');
emitterModule.on("e1", function () {
console.log("emitterModule.e1 handler invoked", arguments);
You can’t perform that action at this time.