| FallbackIfEmptyT(IEnumerableT, T) | Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty. |
| FallbackIfEmptyT(IEnumerableT, T) | Returns the elements of a sequence, but if it is empty then returns an alternate sequence from an array of values. |
| FallbackIfEmptyT(IEnumerableT, IEnumerableT) | Returns the elements of a sequence, but if it is empty then returns an alternate sequence of values. |
| FallbackIfEmptyT(IEnumerableT, T, T) | Returns the elements of a sequence, but if it is empty then returns an alternate sequence of values. |
| FallbackIfEmptyT(IEnumerableT, T, T, T) | Returns the elements of a sequence, but if it is empty then returns an alternate sequence of values. |
| FallbackIfEmptyT(IEnumerableT, T, T, T, T) | Returns the elements of a sequence, but if it is empty then returns an alternate sequence of values. |