protected double Evaluate(FactorialUnaryOperatorASTNode node)
{
int fact(int x) => x == 1 ? 1 : x *fact(x - 1);
var value = ( int )Evaluate(node.Target as dynamic);
if (value < 0)
{
throw new System.Exception("Factorial only supports Positive Integers");
}
return(fact(value));
}
protected double Evaluate(FactorialUnaryOperatorASTNode node)
{
int fact(int x) => x == 1 ? 1 : x *fact(x - 1);
return(fact(( int )Evaluate(node.Target as dynamic)));
}
