Jeffrey Horn jrhorn424

Command Line Tricks

!! Repeat Previous Command
!-1 Repeat Previous Command
!-2 Repeat 2nd Previous Command
!ps Execute Previous Command STARTING WITH ps
!^ First Argument From Previous Command
!:2 2nd Argument From Previous Command
!$ Last Argument From Previous Command
!!:$ Last Argument From Previous Command

Commands examples

If the namespace is not used then the commands will perform on top of the default database. bundle exec rake db:create bundle exec rake db:migrate

By using the namespace we are going to use all the configuration for our alternate DB. bundle exec rake store:db:create bundle exec rake store:db:migrate

Number to Ordinal

See full kata at codewars

Finish the function numberToOrdinal, which should take a number and return it as a string with the correct ordinal indicator suffix (in English). That is:

numberToOrdinal(1) ==> '1st'
numberToOrdinal(2) ==> '2nd'
numberToOrdinal(3) ==> '3rd'
numberToOrdinal(4) ==> '4th'

	#
	# This file configures the New Relic Agent. New Relic monitors
	# Ruby, Java, .NET, PHP, and Python applications with deep visibility and low overhead.
	# For more information, visit www.newrelic.com.
	#
	# Generated June 03, 2013
	#
	# This configuration file is custom generated for Barsoom

	# This is the code from my 'There is No Such Thing as Metaprogramming' talk,
	# which premiered at the Arlington, VA Ruby Users Group on Feb 22nd.
	# Without the deliver and walk-through to the solution below this example
	# will be missing quite an important bit of content (mainly the tracking of
	# 'self' while developing the solution, but it still a useful read.

	# Here is the Toddler with no metajuju. Note that the developer, as well as
	# the code, is completely unuaware of the interpreter. A developer with a
	# background in compiled languages would be comfortable looking at this.

	" tmux will only forward escape sequences to the terminal if surrounded by a DCS sequence
	" http://sourceforge.net/mailarchive/forum.php?thread_name=AANLkTinkbdoZ8eNR1X2UobLTeww1jFrvfJxTMfKSq-L%2B%40mail.gmail.com&forum_name=tmux-users

	if exists('$TMUX')
	let &t_SI = "\<Esc>Ptmux;\<Esc>\<Esc>]50;CursorShape=1\x7\<Esc>\\"
	let &t_EI = "\<Esc>Ptmux;\<Esc>\<Esc>]50;CursorShape=0\x7\<Esc>\\"
	else
	let &t_SI = "\<Esc>]50;CursorShape=1\x7"
	let &t_EI = "\<Esc>]50;CursorShape=0\x7"
	endif

	require 'active_record'
	require 'arel'

	# Ruby-like syntax in AR conditions using the underlying Arel layer (Rails >= 3.0).
	#
	# What you would usually write like this:
	#
	# User.where(["users.created_at > ? AND users.name LIKE ?", Date.yesterday, "Mary"])
	#
	# can now be written like this:

	messages = [nil, "Fizz", "Buzz", "FizzBuzz"]
	acc = 810092048
	(1..100).each do \|i\|
	c = acc & 3
	puts messages[c] \|\| i
	acc = acc >> 2 \| c << 28
	end

	# Explanation
	#

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console