# matheval.rb
# example of Mathematica class ver 0.0.1a

require 'mathematica/mathematica'

math = Mathematica::Mathematica.new.start
	
puts math.eval_foreground('Integrate[Cos[x], x]') #=> 'Sin[x]'

r = math.eval_background('Integrate[Cos[x], x]') #=> a Computation obj.
# ... some jobs ...
sleep(1) until r.state
puts r.result # => 'Sin[x]'