ruby_ipoval

ruby_ipoval

# http://hyperpolyglot.org/scripting

$? # global Process::Status object; system('date'); $?.exitstatus;

$ ruby -cw filename.rb # checks the code in the file for syntax errors
$ ruby -e '1/0'        # one-liner ruby executable

`gem environment gemdir`



# Symbol#to_proc
class Symbol
  def to_proc
    Proc.new { |obj| obj.send(self) }
  end
end

##
# Safer RUBY
##
##
# def open_file(file)
#   ruby_18 {File.open('foo.txt', 'r')} ||
#     ruby_19 {File.open('foo.txt', 'r:UTF-8')}
# end
#
if RUBY_VERSION < '1.9'
  def ruby_18
    yield
  end

  def ruby_19
    false
  end
else
  def ruby_18
    false
  end

  def ruby_19
    yield
  end
end