Paul Wadsworth toriaezunama

1. Introduction to the replicator database

A database where you PUT/POST documents to trigger replications and you DELETE to cancel ongoing replications. These documents have exactly the same content as the JSON objects we used to POST to /_replicate/ (fields "source", "target", "create_target", "continuous", "doc_ids", "filter", "query_params".

Replication documents can have a user defined "_id". Design documents (and _local documents) added to the replicator database are ignored.

The default name of this database is _replicator. The name can be changed in the .ini configuration, section [replicator], parameter db.

2. Basics

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

PROCESS STATE CODES

Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will display to describe the state of a process.

CODE	Meaning
D	Uninterruptible sleep (usually IO)
R	Running or runnable (on run queue)
S	Interruptible sleep (waiting for an event to complete)
T	Stopped, either by a job control signal or because it is being traced.
W	paging (not valid since the 2.6.xx kernel)

NSTimer is a great example of an over-verbose, outdated Objective-C API. To run a simple line of code after a delay, you need to write a lot of boilerplate crap.

How about this:

NSTimer.schedule(5.seconds) {
  println("Hello world!")
}

'Include' in Sequelize: The One Confusing Query That You Should Memorize

When querying your database in Sequelize, you'll often want data associated with a particular model which isn't in the model's table directly. This data is usually typically associated through join tables (e.g. a 'hasMany' or 'belongsToMany' association), or a foreign key (e.g. a 'hasOne' or 'belongsTo' association).

When you query, you'll receive just the rows you've looked for. With eager loading, you'll also get any associated data. For some reason, I can never remember the proper way to do eager loading when writing my Sequelize queries. I've seen others struggle with the same thing.

Eager loading is confusing because the 'include' that is uses has unfamiliar fields is set in an array rather than just an object.

So let's go through the one query that's worth memorizing to handle your eager loading.

	CGFloat ScaleToAspectFitRectInRect(CGRect rfit, CGRect rtarget)
	{
	// first try to match width
	CGFloat s = CGRectGetWidth(rtarget) / CGRectGetWidth(rfit);
	// if we scale the height to make the widths equal, does it still fit?
	if (CGRectGetHeight(rfit) * s <= CGRectGetHeight(rtarget)) {
	return s;
	}
	// no, match height instead
	return CGRectGetHeight(rtarget) / CGRectGetHeight(rfit);

	#!/bin/bash
	#
	# Generates client and server certificates used to enable HTTPS
	# remote authentication to a Docker daemon.
	#
	# See http://docs.docker.com/articles/https/
	#
	# To start the Docker Daemon:
	#
	# sudo docker -d \

	/// An object that has some tear-down logic
	public protocol Disposable {
	func dispose()
	}


	/// An event provides a mechanism for raising notifications, together with some
	/// associated data. Multiple function handlers can be added, with each being invoked,
	/// with the event data, when the event is raised.
	public class Event<T> {