davidblurton’s gists

davidblurton / gist:5115878

Last active December 14, 2015 16:29

ViewModel is a base class for all view models. It handles INotifyPropertyChanged using the C#5 caller member name attribute

	public abstract class ViewModel : INotifyPropertyChanged
	{
	public event PropertyChangedEventHandler PropertyChanged;

	[NotifyPropertyChangedInvocator]
	protected void RaisePropertyChanged([CallerMemberName] string propertyName = string.Empty)
	{
	if (propertyName = string.Empty)
	{
	throw new NotSupportedException("Cannot raise property changed on an empty property name. Make sure you are using the C# 5 compiler to make CallerMemberName work.")

davidblurton / gist:5115922

Created March 8, 2013 11:47

Sets the keyboard focus to the first element in the control's tab order.

	InitializeComponent();
	Loaded += (sender, e) => MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));

davidblurton / gist:5115943

Created March 8, 2013 11:53

You can override the default event handlers on certain controls in App.xaml.cs. For example, we put the cursor at the end of the text on textbox gotfocus (the default is at the start) and we select the text in a password box.

	/// <summary>
	/// Interaction logic for App.xaml
	/// </summary>
	public partial class App : Application
	{
	...

	protected override void OnStartup(StartupEventArgs e)
	{
	EventManager.RegisterClassHandler(typeof(TextBox), UIElement.GotFocusEvent, new RoutedEventHandler(TextBox_GotFocus));

davidblurton / gist:5116002

Created March 8, 2013 12:01

Allow you to use caller member name attribute in .NET 4. Requires the C#5 compiler so all developers must be using VS2012 else it will fail silently.

	// ReSharper disable CheckNamespace
	namespace System.Runtime.CompilerServices
	// ReSharper restore CheckNamespace
	{
	[AttributeUsage(AttributeTargets.Parameter, AllowMultiple = false, Inherited = true)]
	public sealed class CallerMemberNameAttribute : Attribute
	{
	}
	}

davidblurton / gist:5291687

Created April 2, 2013 11:55

Ookii example

	using (FolderBrowserDialog browseDialog = new FolderBrowserDialog())
	{
	if (browseDialog.ShowDialog() == DialogResult.OK)
	{
	m_Path.Text = browseDialog.SelectedPath;
	}
	}

davidblurton / gist:7260533

Created November 1, 2013 03:16

Tried to write merge sort in Clojure. Nearly killed me.

	(mergesort [6 4 2 3 5 1])

	(defn mergesort [x]
	(if (< (count x) 2) x
	(let [half (quot (count x) 2)]
	(merge (mergesort (take half x)) (mergesort (drop half x))))))

	(defn merge[a, b]
	(if (empty? a) b
	(if (empty? b) a

davidblurton / gist:8520944

Last active January 3, 2016 21:19

Call and apply examples

	Array.prototype.max = function() {
	return Math.max.apply(Math, this);
	};

	[1,2,3].max(); // => 3

	Array.prototype.all = function() {
	return [].every.apply(this, [].slice.call(arguments));
	};

davidblurton / gist:9440434

Last active August 29, 2015 13:57

I wanted the index page to be a static page (which you can write in the Ghost editor) rather than the list of posts (which you can only edit by changing the template). Hacked the router so the index page redirects to a static page at /index

	var frontend = require('../controllers/frontend');

	module.exports = function (server) {
	/jslint regexp: true /

	// ### Frontend routes
	server.get('/rss/', frontend.rss);
	server.get('/rss/:page/', frontend.rss);
	server.get('/page/:page/', frontend.homepage);
	server.get('/blog/', frontend.homepage);

davidblurton / gist:33436ef423f10b208ccd

Created May 7, 2014 23:42

	// Module dependencies
	var crypto = require('crypto'),
	express = require('express'),
	hbs = require('express-hbs'),
	fs = require('fs'),
	uuid = require('node-uuid'),
	Polyglot = require('node-polyglot'),
	semver = require('semver'),
	_ = require('lodash'),
	when = require('when'),

davidblurton / gist:7797b14aeef5165f5dee

Created October 12, 2014 15:21

	// Component is a collection of links that have a viewing and editing state.

	var Link = React.createClass({
	mixins: [React.addons.LinkedStateMixin],
	getInitialState: function() {
	return {
	title: this.props.title, // Copy props to state so we can use LinkedStateMixin. This feels like a hack.
	description: this.props.description
	};
	},

David Blurton davidblurton