Ruby 1.9 will return true for public and protected methods, but false for private methods. If we compare this to actually calling the method, we’ll see an inconsistent behavior. Let’s interleave respond_to? checks along with calling the method to see what happens:
Our basic requirements for dealing with a database connection are essentially the same as when dealing with files. We need to open our database connection, do some work with the connection (send and receive queries), and close the connection. We have these similarities, yet the API fo...
Messages a delimited by two newlines. The data field is the event’s payload. In this example, I’ve just embedded some JSON data in the payload. The event field is the name of the event to fire in JavaScript. The id field should be a unique id of the message. SSE does automatic reconne...
Besides enabling multi-threading by default, one of the things I really wanted for Rails 4.0 is the ability to stream data to the client. I want the ability to treat the response object as an I/O object, and have the data I write immediately available to the client. Essentially, the a...
Sometimes buffering a response is less than ideal. It would be nice if we could send the head tag along with any css or script includes to the browser as quickly as possible. Then the browser can download external resources while we're still processing data on the server. If this were...
$ sudo dtrace -q -s calls.d -c'rake environment' Array hash /Users/aaron/.local/lib/ruby/1.9.1/rubygems/requirement.rb 255 Mutex unlock <internal:prelude> 365 Fixnum ^ /Users/aaron/.local/lib/ruby/1.9.1/rubygems/specification.rb 493 Array - /Users/aaron/git/rails/activesupport/lib/act...
2012-07-09 @ 16:51 Crouching Tiger, Hidden Salami I’ve been learning how to cure meat, and I thought I should share my setup. I’m currently on my third batch of meat (second time curing salami). Curing meat requires control of the environment, external and internal to the meat. This p...
So where do we start? Typically, we begin at the beginning. Today we'll start profiling the rake environment command. This task simply requires all of the files for your application, readying everything for execution against a Rails context. Many things can impact the startup time of ...
A while back a ticket was filed on the Rails tracker to turn on config.threadsafe! mode by default in production . Unfortunately, this change was met with some resistance. Rather than make resistance to change a negative thing, I would like to make it a positive thing by talking about...
1 126930 hash_alloc:hash-alloc /Users/aaron/git/rails/activerecord/lib/active_record/base.rb:1528 1 126930 hash_alloc:hash-alloc /Users/aaron/git/rails/activerecord/lib/active_record/base.rb:1529 1 126930 hash_alloc:hash-alloc /Users/aaron/git/rails/activerecord/lib/active_record/base...
Yay! I got vim and autotest integration working. When I run autotest, if there is an error, I can have Vim read the errors from autotest and jump me to the right place. Here is a video of me using it: Please note that I’m not copying and pasting anything. In vim, I hit a command and V...
It’s been forever since I’ve written a blog entry, so LETS DO THIS . I want to talk about reading RFID tags with Ruby. I am a nerd, so even though I can’t think of a good application, I am compelled to be able to read RFID tags. I love programming Ruby, so of course, I have to do this...
I love making beef jerky. I started making jerky by using Alton Brown’s recipe , but I found his jerky making apparatus to be lacking in a few key areas, so I put together my own jerky making setup. I use a modified food dehydrator for making my jerky. I prefer using a food dehydrator...
