public static bool ContainsSame <T>(this SCG.IEnumerable <T> enumerable, T item)
{
// Argument must be non-null
Requires(enumerable != null, ArgumentMustBeNonNull);
return(enumerable.Contains(item, GetIdenticalityComparer <T>()));
}
public static T DifferentItem <T>(this SCG.IEnumerable <T> items, Func <T> newItem, SCG.IEqualityComparer <T> equalityComparer = null)
{
if (equalityComparer == null)
{
equalityComparer = SCG.EqualityComparer <T> .Default;
}
var item = newItem();
while (items.Contains(item, equalityComparer))
{
item = newItem();
}
return(item);
}
