$LOAD_PATH

loadpath_unshifting.rb

# These two lines of code kind of do the same thing. 
# They both add the directory of the file the Ruby interpreter 
# is currently executing to the Load Path.
# Useful when no gem is installed.

$LOAD_PATH.unshift(File.expand_path(File.dirname(__FILE__))) unless $LOAD_PATH.include?(File.expand_path(File.dirname(__FILE__)))

$:.unshift File.dirname(__FILE__)