public CalcResult <T> Subtract(T a)
{
if (IsValid)
{
try
{
_value = Arithmetic <T> .Subtract(_value, a);
}
catch (Exception e)
{
Message = e.Message;
IsValid = false;
}
}
return(this);
}
public CalcResult <T> Subtract(CalcResult <T> cr)
{
if (IsValid)
{
if (cr.IsValid)
{
try
{
_value = Arithmetic <T> .Subtract(_value, cr._value);
}
catch (Exception e)
{
Message = e.Message;
IsValid = false;
}
}
else
{
return(cr);
}
}
return(this);
}
public static T Subtract <T>(T x, T y) => Arithmetic <T> .Subtract(x, y);