public void Setup()
 {
     var loader = new SchemeLoader();
     loader.Import("Scheme.rkt");
     evaluator = new ProxySchemeEvaluator();
 }
 public FunctionPlotter(ISchemeEvaluator evaluator)
 {
     this.evaluator = evaluator;
 }
 public SchemeCalculator(ISchemeEvaluator evaluator)
 {
     this.evaluator = evaluator;
 }