muhaha03

Native app performance metrics

This is a draft list of what we're thinking about measuring in Etsy's native apps.

Currently we're looking at how to measure these things with Espresso and Kif (or if each metric is even possible to measure in an automated way). We'd like to build internal dashboards and alerts around regressions in these metrics using automated tests. In the future, we'll want to measure most of these things with RUM too.

Overall app metrics

App launch time - how long does it take between tapping the icon and being able to interact with the app?
Time to complete critical flows - using automated testing, how long does it take a user to finish the checkout flow, etc.?
Battery usage, including radio usage and GPS usage
Peak memory allocation

Last night, Brian Shirai unilaterally "ended" the RubySpec project, a sub-project of Rubinius (the alternative Ruby implementation which Brian was paid to work on full-time from 2007 to 2013). The blog post describing his reasons for "ending" the project led to a big discussion on Hacker News.

When a single, competing Ruby implementation tells that you its test suite is the One True Way, you should be skeptical. Charles Nutter, Ruby core committer and JRuby head honcho, spent a lot of time last night on Twitter talking to people about what this decision means. He's probably too busy and certainly too nice of a guy to write about what is a political issue in the Ruby community, so I'm going to do it on behalf of all the new or intermediate Rubyists out there that are confused by Brian's decision and what it me

CSS Layout Debugger

A tweet-sized debugger for visualizing your CSS layouts. Outlines every DOM element on your page a random (valid) CSS hex color.

One-line version to paste in your DevTools

Use $$ if your browser aliases it:

~ 108 byte version

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

General Background and Overview

Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
Models and Issues in Data Stream Systems
Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
[Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t

How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.
Use production SSL certificates locally. This is annoying

This is a quick comparison of some of the Android flavors of various BaaS APIs. It attempts to simply show the same ideas (library initialization, user authentication, data read/write, etc) with the various APIs, to give the AeroGear team some context as to possible directions.

There is a nice list of providers here (current as of 08/2012):

http://apievangelist.com/2012/08/22/mobile-backend-as-a-service-roundup-and-the-future-of-web-apis/

And also a comparison of StackMob/Kinvey/Parse here:

http://cloudspring.com/parse-stackmob-and-kinvey-at-war/

	// 原始程式來源: http://practicalcryptography.com/ciphers/enigma-cipher/ 網頁內的 javascript 程式碼

	var c = console;

	var plaintext = 'ABCDEF';
	c.log('>> plaintext2 : '+plaintext);
	var ciphertext = Encrypt(plaintext, 'AAA', 'AAA', '123', 'POMLIUKJNHYTGBVFREDC');
	c.log('>> ciphertext : '+ciphertext);
	var plaintext2 = Encrypt(ciphertext, 'AAA', 'AAA', '123', 'POMLIUKJNHYTGBVFREDC');
	c.log('>> plaintext2 : '+plaintext);

	$ ../mspec/bin/mspec .
	ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-darwin14]
	.................../Users/bshirai/.rubies/ruby-2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- /source/rubyspec/rubyspec/command_line/fixtures/rubyopt (LoadError)
	from /Users/bshirai/.rubies/ruby-2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	F................................................................................
	....................................................................................................
	.................F..................................................................................
	....................................................................................................
	....................................................................................................
	...................................................................E................................

	<?php
	/*
	OCP - Opcache Control Panel (aka Zend Optimizer+ Control Panel for PHP)
	Author: _ck_ (with contributions by GK, stasilok)
	Version: 0.1.7
	Free for any kind of use or modification, I am not responsible for anything, please share your improvements

	* revision history
	0.1.7 2015-09-01 regex fix for PHP7 phpinfo
	0.1.6 2013-04-12 moved meta to footer so graphs can be higher and reduce clutter