public static void Put(string stringValue)
{
double dummy;
if (double.TryParse(Calculator.value + stringValue, out dummy))
{
Calculator.PutNumber(stringValue);
}
else if (!Calculator.isZero && Calculator.validSignals.Contains(stringValue))
{
if (stringValue == "=")
{
Calculator.ComputeEquals();
}
else if (string.IsNullOrWhiteSpace(Calculator.signal))
{
Calculator.PutSignal(stringValue);
}
else
{
Calculator.ComputeEquals();
Calculator.signal = stringValue;
}
}
}