Class: Nydp::Builtin::Minus

Inherits:
Object
  • Object
show all
Defined in:
lib/nydp/builtin/minus.rb

Instance Method Summary collapse

Instance Method Details

#diff(args, accum) ⇒ Object 



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# File 'lib/nydp/builtin/minus.rb', line 6

def diff args, accum
  if Nydp.NIL.is? args
    accum
  else
    diff(args.cdr, (accum - args.car))
  end
end

#invoke(vm, args) ⇒ Object 



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# File 'lib/nydp/builtin/minus.rb', line 2

def invoke vm, args
  vm.push_arg diff(args.cdr, args.car)
end