public BinocularOperatorContext(string operaotrStr)
{
dictionary = new Dictionary <string, IBinocularOperator>();
dictionary.Add("+", new Add());
dictionary.Add("-", new Subtractcs());
dictionary.Add("*", new Multiply());
dictionary.Add("/", new Divide());
if (dictionary.TryGetValue(operaotrStr, out IBinocularOperator tempOperator))
{
@operator = tempOperator;
}
}
public BinocularOperatorContextBySwitch(string operaotrStr)
{
switch (operaotrStr)
{
case "+":
@operator = new Add();
break;
case "-":
@operator = new Subtractcs();
break;
case "*":
@operator = new Multiply();
break;
case "/":
@operator = new Divide();
break;
}
}
