ExceptByExtension Methods | 
| Name | Description | |
|---|---|---|
| ExceptByTSource, TKey(IEnumerableTSource, IEnumerableTSource, FuncTSource, TKey) | 
            Returns the set of elements in the first sequence which aren't
            in the second sequence, according to a given key selector.
              | |
| ExceptByTSource, TKey(IEnumerableTSource, IEnumerableTSource, FuncTSource, TKey, IEqualityComparerTKey) | 
            Returns the set of elements in the first sequence which aren't
            in the second sequence, according to a given key selector.
              |