This article is focused on Lambdas as used in the Ruby language.
What are Lambdas? They’re given several names in other languages.

• Lambda
• Anonymous Function
• Closure

In Ruby, we just call it a Lambda function. It’s defined as such:

x = lambda { return "ar har har har" }

Calling this method will return “ar har har har” as a return value. If that were put into a function, like so,

def foo
  x = lambda { return "ar har har har" }
  x.call
  return "yo ho ho ho"
end

This will actually return “yo ho ho ho”. If you were to puts x.call, however, you would see “ar har har har”. Very interesting. So returning from lambda acts just as a function would, hence it’s an anonymous function.

Lambdas have an interesting quirk in that if you declare one as such:

x = lambda { |x, y| puts x + y }

And then call it like this:

x.call(1, 2, 3)

It will throw an argument error

export PATH=$HOME/jruby/bin:$PATH

Next install the Celerity gem in jRuby (we are using the github version rather than the ruby forge version, as it provides a later version):

jruby -S gem install jarib-celerity --source=http://gems.github.com

Now install the Culerity gem. This provides the interface between Celerity and your environment without forcing you to run in jRuby

 gem install langalex-culerity --source http://gems.github.com

Place this in your test environment:

# config/environments/test.rb
 
config.gem "langalex-culerity", :lib => false

I call :lib => false here to avoid loading the gem. This is done in the file generated by culerity. Finally remove features/steps/webrat_steps.rb as it will conflict with Culerity, and run:

script/generate culerity

Enjoy! Culerity should have very similar syntax to webrat, however keep in mind you may see some differences that you may need to adjust.

What I saw.

Well throughout the day when I went to use the restroom, the stalls were full of people in them, later i caught on that it was the same guys shoes.

And by the end of the day I was worried for the guys health and I went to investigate and this is what I found.

Closer inspection.

Ahhahhh it's a trick.

Very Funny indeed.  :-)  Nice april fools joke Justin.