public override CommandResult InnerApply(IFunctionsStorage storage)
{
if (!storage.ContainsFunctions(this.nameFunction))
{
return(this.Failure("Function with this name is missing"));
}
if (storage.ContainsFunctions(this.nameDerivative))
{
return(this.Failure("Function with the same name already exists"));
}
var derivative = storage.GetDerivativeFunction(this.nameFunction);
storage.AddFunction(this.nameDerivative, derivative);
return(this.Success());
}
public override CommandResult InnerApply(IFunctionsStorage storage)
{
return(storage.ContainsFunctions(this.name) ? this.Success(storage.GetDerivativeFunction(this.name).ToString())
: this.Failure("a function with this name is missing"));
}