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Tim Cowlishaw timcowlishaw

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@timcowlishaw
timcowlishaw / gist:137684
Created June 29, 2009 16:24
function getViewportOffset(forElement) { /* ported from prototype.js */
var valueT = 0, valueL = 0;
var element = forElement;
while (element){
valueT += element.offsetTop || 0;
valueL += element.offsetLeft || 0;
// Safari fix
if (element.offsetParent == document.body && element.css('position') == 'absolute') break;
element = element.offsetParent;
}
@timcowlishaw
timcowlishaw / gist:140112
Created July 3, 2009 14:15
class Period
attr_reader :start, :extent, :duration
def initialize(start, extent, duration)
@start, @extent, @duration = start, extent, duration
end
def finish
start + duration
end
@timcowlishaw
timcowlishaw / gist:146088
Created July 13, 2009 12:42
module KnowsAboutItsImplementations
class << self
attr_reader :implementations
end
@implementations = []
def self.included(klass)
self.implementations << klass
end
@timcowlishaw
timcowlishaw / gist:146107
Created July 13, 2009 13:24
module Moderatable
@moderatable_classes = []
class << self
attr_reader :moderatable_classes
def included(klass)
@moderatable_classes.include?(klass) || @moderatable_classes.push(klass)
klass.class_eval do
acts_as_state_machine :initial => :pending, :column => :moderation_state
state :pending
state :approved
@timcowlishaw
timcowlishaw / gist:151975
Created July 22, 2009 11:39
class Proc
def and_maybe(&func)
val = self.call
val ? func.call(val) : val
end
end
@timcowlishaw
timcowlishaw / gist:218852
Created October 26, 2009 17:45
<!-- Got this in the html: -->
<div class="privacy">
<input checked="checked" id="region_visible_public" name="user[region_visible]" type="radio" value="true" />
<label for="region_visible_public">public</label>
<input id="region_visible_private" name="user[region_visible]" type="radio" value="false" />
<label for="region_visible_private">private</label>
<script type="text/javascript">
console.log("region_visible_public " + document.getElementById("region_visible_public").checked)
@timcowlishaw
timcowlishaw / gist:218868
Created October 26, 2009 18:01
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<link rel="shortcut icon" href="/images/favicon.ico"/>
<title>NCSL</title>
<script src="/javascripts/prototype.js?1252667573" type="text/javascript"></script>
<link href="/stylesheets/master.css?1252667573" media="screen" rel="stylesheet" type="text/css" />
<link href="/stylesheets/reset.css?1252667573" media="screen" rel="stylesheet" type="text/css" />
@timcowlishaw
timcowlishaw / gist:242677
Created November 25, 2009 12:35
pascalTriangle :: (Integral a) => a -> [[a]]
pascalTriangle n = map pascalRow [1..n]
pascalRow :: (Integral a) => a -> [a]
pascalRow n = applyRepeatedly (n - 1) nextRow [1]
where
applyRepeatedly :: (Integral a) => a -> (b -> b) -> (b -> b)
applyRepeatedly 0 func = (\x -> x)
applyRepeatedly 1 func = func
applyRepeatedly n func = func . (applyRepeatedly (n - 1) func)
nextRow :: (Integral a) => [a] -> [a]
@timcowlishaw
timcowlishaw / Object_when.rb
Created November 30, 2009 16:44
class Object
def when(*a, &block)
a.inject(true) {|m, n| m && n} ? block.call(*([self] + a)) : self
end
end
upper_limit = nil
puts [1, 2, 3, 4, 5].when(upper_limit) {|array, upper_limit| array.select {|e| e < upper_limit}}.map {|n| n ** 2}.inject(0) {|m, n| m + n}
# => 55
@timcowlishaw
timcowlishaw / gist:246237
Created December 1, 2009 11:38
def to_rows(array, rows)
new_array = []
while !array.empty?
new_array << (1..rows).to_a.map { array.shift }
end
new_array
end