Bear Den Designs

De Morgan, Ruby

#De Morgan the Ruby way

[true,false].each do |p|
  [true,false].each do |q|
    puts "p=#{p} q=#{q}"
    if !(p or q) == (!p and !q)
      puts "De Morgan Rules! !(p or q) == (!p and !q)"
    else
      puts "De Morgan is a Liar!"
    end

    # if find yourself writing
    if !p and !q
      print "-"
      # you could be writing 
      unless p or q
        puts "if !p and !q equivalent to unless p or q"
      end
    end


    if !(p and q) == (!p or !q)
      puts "De Morgan Rules! !(p and q) == (!p or !q)"
    else
      puts "De Morgan is a Liar!"
    end

    # if find yourself writing
    if !p or !q
      print "-"
      # you could be writing 
      unless p and q
        puts "if !p or !q equivalent to unless p and q"
      end
    end

  end
end

Run individual shoulda tests

When you run tests of just one model or controller you usually do something like:

ruby test/unit/evaluation_test.rb

If you want to target just one test you can use the -n option

ruby test/unit/evaluation_test.rb -n test_return_pending_evaluatees_from_composite_group

For shoulda users if you want to target just one test the -n option can also take regular expressions.

ruby test/unit/evaluation_test.rb -v -n "/have many/"

The -v lists the test name before every test, aka verbose mode.

Please Spam This Post

Just updated the code to detect the spamming bastards. Let’s see if it works.

Pretty Local Rdoc

From the RubyInside site a couple of gems to make your local rdocs look and behave nicer.

To reap the benefits:

Protect Staging Server with Password

When developing a new application and releasing often you may want to protect the site from prying eyes. A simple way to do this when using the nginx web server is to use basic http authentication.

I prefer to do this in the nginx config file so it doesn’t impact local development.

You’ll need to create a password file using htpasswd command line utility. This file should be relative to the install directory of nginx. The default install would place this file in /usr/local/nginx

Next, you need to tell nginx to use basic auth for any access to this (virtual) host. I place the 2 relevant lines in the server portion of the config file

1. …
   auth_basic “Login to see this alpha site.”;
   auth_basic_user_file this_hosts_password_file;
2. …
   }

A login will now be presented for any entry into the site.