public static bool None <T>(this IEnumerable <T> source, Func <T, bool> predicate)
{
ArgumentMust.NotBeNull(() => source);
ArgumentMust.NotBeNull(() => predicate);
return(EnumerablePredicates.None(source, predicate));
}
public static void NotContainNull <T>(Func <IEnumerable <T> > argumentFunc)
{
if (EnumerablePredicates.ContainsNull(argumentFunc()))
{
var argument = argumentFunc.GetParameter(EnumerablePredicates.ContainsNull);
throw new ArgumentException($"No item in the sequence '{argument.Name}' may be null.", argument.Name);
}
}
public static void NotBeEmpty <T>(Func <IEnumerable <T> > argumentFunc)
{
if (EnumerablePredicates.IsEmpty(argumentFunc()))
{
var argument = argumentFunc.GetParameter(EnumerablePredicates.IsEmpty);
throw new ArgumentException($"The sequence '{argument.Name}' must not be empty.", argument.Name);
}
}
public static bool IsEmpty <T>(this IEnumerable <T> source)
{
ArgumentMust.NotBeNull(() => source);
return(EnumerablePredicates.IsEmpty(source));
}
