Phrogz’s gists

Phrogz / readrb.rb

Created November 15, 2010 23:33

	file = ARGV[0]
	2.times do
	lines, bytes = 0,0
	start = Time.now
	contents = File.open(file,'rb'){ \|f\| f.read }
	contents.scan(/.+/) do \|line\|
	lines += 1
	bytes += line.size
	end
	elapsed = Time.now-start

Phrogz / jquery.flot.stack.reversible.js

Created November 23, 2010 20:33

Hack to the jQuery Flot 'stack' plug-in, allowing the user to make bar graphs stack in the same order as the legend.

	function stackData(plot, s, datapoints) {
	if (s.stack == null)
	return;

	/********************************************************************************************
	* series:{ reverseStack:true } causes the first series to be stacked at the top,
	* the last series at the bottom. (Vertical ordering matches the legend.)
	*
	* Does not properly support excluding specific series from stacking; it's all or none.
	*

Phrogz / nokogiri_reorder_nodes.rb

Created December 17, 2010 16:43

Reordering nodes in a Nokogiri XML document and getting the result as new XML

	require 'nokogiri'
	xml = <<ENDXML
	<top>
	<node1>
	<value>mmm</value>
	<value>zzz</value>
	<value>ccc</value>
	</node1>
	<anothernode>
	<value>zzz</value>

Phrogz / gist:749509

Created December 21, 2010 04:51

	var versionByLevelAndDigits = {
	L : {
	41 : 1,
	77 : 2,
	127 : 3
	},
	M : {
	34 : 1,
	63 : 2,
	101 : 3

Phrogz / SVG Path to Polygon.js

Created February 27, 2011 04:28

Convert a SVG path to a Polygon by sampling the path, but also including all control points in the result. See http://phrogz.net/SVG/convert_path_to_polygon.xhtml

	// http://phrogz.net/SVG/convert_path_to_polygon.xhtml
	function pathToPolygon(path,samples){
	if (!samples) samples = 0;
	var doc = path.ownerDocument;
	var poly = doc.createElementNS('http://www.w3.org/2000/svg','polygon');

	// Put all path segments in a queue
	for (var segs=[],s=path.pathSegList,i=s.numberOfItems-1;i>=0;--i) segs[i] = s.getItem(i);
	var segments = segs.concat();

Phrogz / shared variable.js

Created February 28, 2011 21:59

Techniques for sharing a variable between two public functions without exposing the variable.

	// Technique 1 - local captures
	var _xy = (function(){
	var shared = {};
	var foo = function(){ ...access shared... };
	var bar = function(){ ...access shared... };
	return [foo,bar];
	})();
	var foo = _xy[0];
	var bar = _xy[1];

Phrogz / cvars_ivars.rb

Created March 23, 2011 21:35

	class Foo
	@@foo = nil
	def self.seti( value )
	@foo = value
	end
	def self.setc( value )
	@@foo = value
	end
	def self.geti
	@foo

Phrogz / simulated_annealing.rb

Created March 24, 2011 16:49

A generic module for performing simulated annealing optimizations

	# Include this in a class and define your own #variation method that
	# makes returns a new instance that might be better.
	#
	# Use #add_annealing_constraint to add constraints
	module SimulatedAnnealing
	def self.included(base) base.extend(ClassMethods) end

	module ClassMethods
	def annealing_constraints
	@annealing_constraints \|\|= {}

Phrogz / replace_textarea_text.js

Created March 24, 2011 19:29

	// From SMF
	// Replaces the currently selected text with the passed text.
	function replaceText(text, textarea)
	{
	// Attempt to create a text range (IE).
	if (typeof(textarea.caretPos) != "undefined" && textarea.createTextRange)
	{
	var caretPos = textarea.caretPos;

	caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;

Phrogz / gist:1142428

Created August 12, 2011 16:40

Codepage 65001 prevents psql.exe from working

	C:\>"\Program Files\PostgreSQL\9.0\bin\psql.exe" -U postgres -p 5434 uxt
	psql (9.0.4)
	WARNING: Console code page (437) differs from Windows code page (1252)
	8-bit characters might not work correctly. See psql reference
	page "Notes for Windows users" for details.
	Type "help" for help.

	uxt=# \dt
	List of relations
	Schema \| Name \| Type \| Owner

Gavin Kistner Phrogz