Mark Middleton coder36

Cobol resources:

The IDE works really well. It has syntax checking, and a built in list of key words.

Circa 2010, when I saw this scala code snippet for the first time, my mind was blown at the possibilities...

object WhileDemo {
  def main( args: Array[String]): Unit = {
    var i = 1
    While( i < 10 ) {
      println( i )
      i+=1
    }

}

https://learn.thoughtbot.com/test-driven-rails-resources/capybara.pdf

https://learn.thoughtbot.com/test-driven-rails-resources/rspec_acceptance.pdf

When using rvm to install jruby on Ubuntu Trusty, you will need:

2048mb memory (if you have less than this then mvn exists with some random error!)
mvn installing and available on the path.

To create fake RPM's, use fpm...

If the RPM's were created correctly in the firstplace, then the epock should be set to 0. In the scenario below, the epochs had been set to the current unin time. Strangely, you can not just set it to 9999999999? You may need to employ different strategies to get the fake package to 'win' the version battle over existing rpm's:

    mkdir -p /tmp/fake_package
    fpm -s dir -t rpm -n grpahite -v 999999999 --epoch `date +%s` -f -a noarch -C /tmp/fake_package ./
    fpm -s dir -t rpm -n logstash -v 0.0.1 --epoch `date +%s` --iteration 999 -f -C /tmp/fake_package ./
    fpm -s dir -t rpm -n sensu -v 0.0.1 --epoch `date +%s` --iteration 999 -f -C /tmp/fake_package ./

fpm -s dir -t rpm -n uchiwa -v 0.0.1 --epoch date +%s --iteration 999 -f -C /tmp/fake_package ./

RPM version info:

    rpm -qi zlib

rpm -q zlib --queryformat %{version}-%{release}

Counts the number of bits in an array. Assumes array of 8 bit values

def count_bits a
  a.inject(0) do |total, n| 
    (0...8).each do |j|
      total = total + ( (n>>j) & 0x01 )
    end
    total
  end

end

Setup

[ansible github] (https://github.com/ansible/ansible)

sudo yum install rpm-build make python2-devel asciidoc python-setuptools PyYAML python-crypto2.6 python-httplib2  python-jinja2  python-keyczar sshpass
git clone git://github.com/ansible/ansible.git
cd ./ansible
git checkout release1.6.2

make rpm

	object UsingDemo {

	def main( args : Array[String] ) {

	using( new A() ) { a =>
	a.print("Hello World " )
	}
	}