/// <summary>
/// Gets a new specification expression which corresponds to the logical
/// negation of the specified object: <c>NOT</c>.
/// </summary>
/// <returns>A specification expression.</returns>
/// <param name="spec">A specification expression.</param>
/// <typeparam name="T">The generic type of the specification.</typeparam>
public static ISpecificationExpression <T> Not <T>(this ISpecificationExpression <T> spec)
{
return(Spec.Expr(spec.GetExpressionOrThrow().Not()));
}
/// <summary>
/// Gets a new specification function which corresponds to the logical
/// negation of the specified object: <c>NOT</c>.
/// </summary>
/// <returns>A specification function.</returns>
/// <param name="spec">A specification function.</param>
/// <typeparam name="T">The generic type of the specification.</typeparam>
public static ISpecificationFunction <T> Not <T>(this ISpecificationFunction <T> spec)
{
var func = GetFunction(spec);
return(Spec.Func <T>(o => !func(o)));
}
/// <summary>
/// Gets a specification function which copies the specified specification expression.
/// </summary>
/// <returns>A specification function.</returns>
/// <param name="spec">A specification expression.</param>
/// <typeparam name="T">The generic type of the specification.</typeparam>
public static ISpecificationFunction <T> AsSpecificationFunction <T>(this ISpecificationExpression <T> spec)
{
return(Spec.Func(spec.GetFunction()));
}
