RubyConf 2011 | 2011-09-29 | Gregory Moeck (@gregmoeck) | Slides
| Hi David, | |
| I came across your profile online and wanted to reach out about Development | |
| Opportunities here at Groupon. The company is growing, and we're always | |
| looking for folks with solid skills that can make positive contribution to | |
| our continued success. Any chance you'd be open to a quick conversation | |
| about opportunities, or for any possible networking potential? If so, let me | |
| know when you're free and we can set up a time to chat. Also, if you are | |
| interested, it would be great if you could forward a current resume over | |
| that I can take a look at. I look forward to hearing back from you! Please | |
| let me know if you have any questions. |
| # features/step_definitions/search_steps.rb | |
| When /^I search for "([^"]*)"$/ do |search_term| | |
| search_catalogue_with search_term, :using_direct_model_access | |
| end | |
| # features/support/search_support.rb | |
| module SearchSupport | |
| class SearchAutomator |
This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.
You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.
| ################################################################## | |
| # ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin11.0.0] | |
| # 10gen: mongo-1.5.2 | |
| # bson-1.5.2 (BSON::BSON_C) | |
| ################################################################## | |
| user system total real | |
| 10gen: insert 10,000 blank documents 0.670000 0.060000 0.730000 ( 0.744400) | |
| 10gen: insert 10,000 blank documents safe mode 1.200000 0.140000 1.340000 ( 1.800714) | |
| 10gen: insert 1,000 normal documents 0.090000 0.010000 0.100000 ( 0.091035) |
This script installs a patched version of ruby 1.9.3-p194 with patches for boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.
Huge thanks to funny-falcon for the performance patches.
| # The new git-scm.com site includes man pages designed for pleasant viewing in a web browser: | |
| # | |
| # http://git-scm.com/docs | |
| # | |
| # The commands below can be used to configure git to open these pages when | |
| # using `git help -w <command>' from the command line. Just enter the config | |
| # commands in your shell to modify your ~/.gitconfig file. | |
| # Create a new browser command and configure help -w to use it. | |
| git config --global browser.gitscm.cmd "/bin/sh -c 'open http://git-scm.com/docs/\$(basename \$1 .html)' --" |
#Practical Object Oriented Design in Ruby
Design that anticipate specific future requirements almost always end badly.
Practical design does not anticipate what will happen to your application, it merely accepts that something
will and that, in the present, you cannot know what. It does not guess the future; it preserves your options for accommodating the future.
It doesn't choose; it leaves you room to move.
The purpose of design it to allow you to do it later and its primary goal is to reduce the cost of change.
Design is more the art of preserving changeability than it is the act of achieving perfection.
| gifify() { | |
| if [[ -n "$1" ]]; then | |
| if [[ $2 == '--good' ]]; then | |
| ffmpeg -i $1 -r 10 -vcodec png out-static-%05d.png | |
| time convert -verbose +dither -layers Optimize -resize 600x600\> out-static*.png GIF:- | gifsicle --colors 128 --delay=5 --loop --optimize=3 --multifile - > $1.gif | |
| rm out-static*.png | |
| else | |
| ffmpeg -i $1 -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > $1.gif | |
| fi | |
| else |
I wrote a middleware (actually two, but they do the same with different implementations) that logs information about signed in scopes in a Rails + Devise application. The solution works with multiple logins (like having a person logged both as an Admin and a User). I tested against Rails 4 and Devise HEAD, but it should work fine in any Rails 3 application.
This solution doesn't use the log_tags configuration option since it isn't very helpful when you need to retrieve information stored in cookies/session. That information isn't 'ready' when the Rails::Rack::Logger is executed, since it happens way down in the middleware chain.
Add one of the following implementations to your application load path and use the following configuration to add the middleware to your application stack:
# application.rb