/// <summary>
/// Success: Calls <paramref name="onSuccess"/> and returns a <see cref="ResultOrError{TError}.Success"/>.
/// <para></para>
/// Error: Calls <paramref name="onError"/> and returns a <see cref="ResultOrError{TError}.Error(TError)"/> with the <typeparamref name="TError"/> from <paramref name="onError"/>.
/// </summary>
/// <typeparam name="TError">The type of the Error.</typeparam>
/// <param name="onSuccess">Is called if This is a <see cref="Success"/>.</param>
/// <param name="onError">Is called and returned as <see cref="ResultOrError{TError}.Error(TError)"/> if This is a <see cref="Error"/>.</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public ResultOrError <TError> Either <TError>(Action onSuccess, Func <TError> onError)
{
Args.ExceptionIfNull(onSuccess, nameof(onSuccess), onError, nameof(onError));
if (_isSuccess)
{
onSuccess();
return(ResultOrError <TError> .Success());
}
return(onError());
}
/// <summary>
/// Creates a instance of <see cref="ResultOrError{TError}"/>.
/// </summary>
/// <typeparam name="TError"></typeparam>
/// <param name="success"></param>
/// <param name="errorFunc"></param>
/// <returns></returns>
public static ResultOrError <TError> Create <TError>(bool success, Func <TError> errorFunc)
{
Args.ExceptionIfNull(errorFunc, nameof(errorFunc));
return(success ? ResultOrError <TError> .Success() : ResultOrError <TError> .Error(errorFunc()));
}
/// <summary>
/// Success: Returns a <see cref="ResultOrError{TError}.Success"/>.
/// <para></para>
/// Error: Calls <paramref name="onError"/> and returns a <see cref="ResultOrError{TError}.Error(TError)"/> with the <typeparamref name="TError"/> from <paramref name="onError"/>.
/// </summary>
/// <typeparam name="TError">The type of the Error.</typeparam>
/// <param name="onError">Is called and returned as <see cref="ResultOrError{TError}.Error(TError)"/> if This is a <see cref="Error"/>.</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public ResultOrError <TError> OnError <TError>(Func <TError> onError)
{
Args.ExceptionIfNull(onError, nameof(onError));
return(_isSuccess ? ResultOrError <TError> .Success() : onError());
}