/// <summary>
/// Chains two results together by taking the value of the result, and passing it to the
/// given function which returns another result. If the result is a failure, then the
/// function will not be applied.
/// </summary>
/// <typeparam name="TNewValue">
/// The type of the result that the value will be mapped to.
/// </typeparam>
/// <param name="function">The function to apply to the value.</param>
/// <returns>A new result with the mapping applied.</returns>
public Exceptional <TNewValue> Then <TNewValue>(Func <T, Exceptional <TNewValue> > function)
{
if (function == null)
{
throw new ArgumentNullException("function");
}
if (IsSuccess)
{
return(function(Value));
}
else
{
return(Exceptional <TNewValue> .Failure(Exception));
}
}
/// <summary>
/// Maps the given function to the contents of the result. If the result is a success, the
/// function will be applied to the success value; otherwise, the function will not be applied.
/// </summary>
/// <typeparam name="TNewValue">The type that the success value will be mapped to.</typeparam>
/// <param name="function">The function to apply to the success value of the result.</param>
/// <returns>A copy of the result with the mapping applied.</returns>
public Exceptional <TNewValue> Map <TNewValue>(Func <T, TNewValue> function)
{
if (function == null)
{
throw new ArgumentNullException("function");
}
if (IsSuccess)
{
return(Exceptional <TNewValue> .Success(function(Value), PagingInfo));
}
else
{
return(Exceptional <TNewValue> .Failure(Exception));
}
}