Contains()

bool System.Linq.Lookup< TKey, TElement >.Contains ( TKey key )

inline

Implements System.Linq.ILookup< TKey, TElement >.

Definition at line 128 of file Lookup.cs.

    {
        return GetGrouping(key, create: false) != null;
    }

References System.Linq.Lookup< TKey, TElement >.GetGrouping(), and System.key.