Neil Tonge rctneil

A Common .ruby-version File For Ruby Projects

Background

I've been using this technique in most of my Ruby projects lately where Ruby versions are required:

Create .rbenv-version containing the target Ruby using a definition name defined in ruby-build (example below). These strings are a proper subset of RVM Ruby string names so far...
Create .rvmrc (with rvm --create --rvmrc "1.9.3@myapp") and edit the environment_id= line to fetch the Ruby version from .rbenv-version (example below).

Today I learned about another Ruby manager, rbfu, where the author is using a similar technique with .rbfu-version.

The BBC has a server-side image service which provides developers with multiple sized versions of any image they request. It works in a similar fashion to http://placehold.it/ but it also handles the image ratios returned (where as placehold.it doesn't).

The original BBC News process (and my re-working of the script) follows roughly these steps...

Create new instance of ImageEnhancer
Change any divs within the page (which have a class of delayed-image-load) into a transparent GIF using a Base64 encoded string.
- We set the width & height HTML attributes of the image to the required size
- We know what size the image needs to be because each div has custom data-attr set server-side to the size of the image
- We then set a class of image-replace onto each newly created transparent image
We use a 250ms setTimeout to unblock the UI thread and which calls a function resizeImages which enhances the image-replace images so their source is now set to a URL whe

	<?php

	class ArrayExtensions
	{
	public function to_sentence($array)
	{
	$count = count($array);
	switch ($count)
	{
	case 0:

	/*

	You can now create a spinner using any of the variants below:

	$("#el").spin(); // Produces default Spinner using the text color of #el.
	$("#el").spin("small"); // Produces a 'small' Spinner using the text color of #el.
	$("#el").spin("large", "white"); // Produces a 'large' Spinner in white (or any valid CSS color).
	$("#el").spin({ ... }); // Produces a Spinner using your custom settings.

	$("#el").spin(false); // Kills the spinner.

	// Media Queries in Sass 3.2
	//
	// These mixins make media queries a breeze with Sass.
	// The media queries from mobile up until desktop all
	// trigger at different points along the way
	//
	// And important point to remember is that and width
	// over the portrait width is considered to be part of the
	// landscape width. This allows us to capture widths of devices
	// that might not fit the dimensions exactly. This means the break

	$sprites: sprite-map("sprites/*.png");
	$sprites-retina: sprite-map("sprites-retina/*.png");

	@mixin sprite-background($name) {
	background-image: sprite-url($sprites);
	background-position: sprite-position($sprites, $name);
	background-repeat: no-repeat;
	display: block;
	height: image-height(sprite-file($sprites, $name));
	width: image-width(sprite-file($sprites, $name));

	// Maintain ratio mixin. Great for responsive grids, or videos.
	// https://gist.github.com/brianmcallister/2932463
	//
	// $ratio - Ratio the element needs to maintain.
	//
	// Examples
	//
	// // A 16:9 ratio would look like this:
	// .element {
	// @include maintain-ratio(16 9);

	//
	// Example usage: phantomjs screenshot.js http://yahoo.com /tmp/yahoo.png
	//

	var system = require('system');
	var url = system.args[1];
	var filename = system.args[2];
	var page = new WebPage();

	page.open(url, function (status) {

	/*
	* a small mixin for easy use of rem with px as fallback
	* usage: @include x-rem(font-size, 14px)
	* usage: @include x-rem(marign, 0 12px 2 1.2)
	* usage: @include x-rem(padding, 1.5 24px)
	*
	* thanks to Eric Meyer for https://github.com/ericam/susy
	* and Hans Christian Reinl for http://drublic.de/blog/rem-fallback-sass-less/
	*/
	@mixin x-rem($property, $values) {

	# config/initializers/clear_logs.rb

	# This snippet simply clears your logs when they are too large.
	# Every time you start the rails environment it checks log sizes
	# and clears the logs for you if necessary.

	if Rails.env.development?
	MAX_LOG_SIZE = 10.megabytes

	logs = File.join(Rails.root, 'log', '*.log')