private static Exception VerifyFailRangeRequirement <T>(T _, string argumentName, FluentRangeVerificationCallback <T> evaluate, string expectedMessage = null)
{
expectedMessage = (expectedMessage ?? DefaultMessage).AssertNotNull().AssertNotEmpty();
return(_.RequiresFailRange(argumentName, evaluate, () => expectedMessage));
}
// TODO: TBD: `out of range´ of what? would it not be worth specifying in terms of at least an IEnumerable<T>? /// <summary> /// Throws an <see cref="ArgumentOutOfRangeException"/> when <paramref name="value"/> /// <paramref name="evaluate"/> returns false. /// </summary> /// <typeparam name="T"></typeparam> /// <param name="value"></param> /// <param name="argumentName"></param> /// <param name="evaluate"></param> /// <param name="message"></param> /// <returns>Nothing. This method always throws.</returns> public static Exception RequiresFailRange <T>(this T value, string argumentName, FluentRangeVerificationCallback <T> evaluate, FluentMessageCallback message = null) => evaluate.Invoke(value) ? null : Requires.FailRange(argumentName, message.UseCallbackOrDefault().Invoke());
