Jerry Cheung

When you use Rails built-in helpers for page, action, and fragment caching, the cached data is stored into an instance of ActiveSupport::Cache::Store.

You've heard of Pry right?

Republished from Opperator blog When building a product for your audience, you need to empathize with their pains and problems.

For prototyping a new webapp, I like to get an HTML prototype on screen as fast as possible.

Republished from Opperator blog Building an API driven Javascript app brings about challenges for authentication that I've taken for granted when working with traditional http frameworks.

Unit tests should pass when run in random order.

Republished from Opperator blog In doing research for whether Ember.js would be a good fit for Opperator, I took some notes about the process.

It doesn't matter if data is being migrated from SQL to NoSQL, from flat files to key-value store, or from XML to an object database, or every permutation of any data store to any other data store.

Republished from Opperator blog Behind the Curtain posts explore the development of a piece of Opperator's architecture, including the what, why, and how.

Republished from Opperator blog With the year coming to a close and the holidays fast approaching, it's a good time to step back and reflect on how lucky we are to be developers in this point in history.

Pick any popular open source library.

Republished from Opperator blog A lot of startup advice revolves around launching a minimal viable product quickly.

You've just written a masterpiece of a web app.

In a nutshell, Node is a Javascript framework for building network apps.

2010 was a big shift in work environment for me.

While iOS projects have the advantage of multiple NIB files, this is not the default for development on OSX.

When [bundler](http://gembundler.com/) first came out, I really wanted to like it.

Coded and used by the [Github](http://github.com/) team, [Resque](http://github.com/defunkt/resque) is a Ruby queue for processing background jobs built on top of [Redis](http://code.google.com/p/redis/).

Three weeks ago, I started as a full time software developer at Intridea.

I started working with MongoDB a few days ago.

Delivering email is easy.

When I started planning out Beerpad, I wanted to focus on fun beer ideas.

The gray and wet weather outside put me in an gloomy mood, so I didn't want to write any 'unhappy' code and regret it later.

To spice things up from Outspokes and consulting, Arthur, Jeff and I held our first informal hackathon at Mo Joe Cafe on a sunny Saturday morning.

Andrew noticed that his beer reviews weren't showing up on beerpad after he published them.

Rails has two methods of adding external libraries to a project, rubygems and plugins.

debugging django SQL problems documenting convention for Rails routes Debugging Django SQL problems You can install Django debug toolbar middleware, or you can set a breakpoint and inspect queries that have been run on the current database connection: from

deleting remote git tags Deleting remote git tags Find the tags you want to delete git remote update git tag -l Removing a single tag git push origin :refs/tags/my_tag_name Removing a bunch of tags (2009 and 2010) git tag -l | grep -e '^20' | perl -ne '…

backspace in GNU screen with Apple Terminal, SSH, and Ubuntu jquery tooltip plugins django stuff It's just a backspace Is it too much to ask for backspace to mean backwards-delete?

dumping and restoring databases from RDS connecting to Twitter via oauth using python python debugger in Django Backup and Restore to RDS Backup: mysqldump -h dev-rds.customdomain.com -u root -psecret database_name table_name | gzip > backup.sql.gz tabl…

I haven't used python as my main day-to-day language, but I've already run into problems with the tools and libraries that has had me pulling my hair out.

When you want to send a quick email in a ruby script, it's easy to send it through Gmail.

Some equivalents for my reference: Ruby Python Comment Rubygems Eggs python setuptools, utility is called easy_install __FILE__ ???

It's been a month since I left my job at Coupa and co-founded Outspokes with my friend Arthur.

My cute little box car, [Chuck](/images/chucksmall.jpg), came with an owners manual.

Once models and controllers grow to a certain size and complexity, it gets tricky to figure out what callbacks act upon them.

I ran into some trouble with getting a good native postgresql driver installed.

Jumping into a new language, a new framework, and a new set of tools is overwhelming!

Retrieving records from the database and mapping the results into ActiveRecord models are a big part of every Rails app.

For this upcoming March release, we plan to upgrade from Rails 2.1 to Rails 2.2.2.

A great thing about Coupa work is how I can hack it up without a network connection.

A while back, I discovered the magical .irbrc.

I learned this tip from Seggy and I've explained it to several people already.

While I waited for Coupa customers to be upgraded, I decided to clean up my .emacs config file.

I'm a fan of ActiveSupport::CoreExtensions::Time::Calculations.

One small annoyance about working with the flash in Rails is that it only works well if you render separate pages per action.

Kyle sent out this amazing tool for testing and debugging at the HTTP level.

I've come across the same problem in my personal projects and also at work.

Yesterday was an emotional roller coaster of brutality and awesomeness, mixed with a good share of productivity.

For Money app, I ran into a problem with the charts drawing ugly x-axis when the datapoints were too close together.