JoinIterator< TOuter, TInner, TKey, TResult >()

static IEnumerable< TResult > System.Linq.Enumerable.JoinIterator< TOuter, TInner, TKey, TResult > ( IEnumerable< TOuter > outer, IEnumerable< TInner > inner, Func< TOuter, TKey > outerKeySelector, Func< TInner, TKey > innerKeySelector, Func< TOuter, TInner, TResult > resultSelector, IEqualityComparer< TKey > comparer )

inlinestaticprivate

Definition at line 5157 of file Enumerable.cs.

    {
        using IEnumerator<TOuter> e = outer.GetEnumerator();
        if (!e.MoveNext())
        {
            yield break;
        }
        Lookup<TKey, TInner> lookup = Lookup<TKey, TInner>.CreateForJoin(inner, innerKeySelector, comparer);
        if (lookup.Count == 0)
        {
            yield break;
        }
        do
        {
            TOuter item = e.Current;
            Grouping<TKey, TInner> grouping = lookup.GetGrouping(outerKeySelector(item), create: false);
            if (grouping != null)
            {
                int count = grouping._count;
                TInner[] elements = grouping._elements;
                int i = 0;
                while (i != count)
                {
                    yield return resultSelector(item, elements[i]);
                    int num = i + 1;
                    i = num;
                }
            }
        }
        while (e.MoveNext());
    }

References System.Collections.Generic.Dictionary< TKey, TValue >._count, System.comparer, System.Linq.count, System.Collections.Generic.Dictionary< TKey, TValue >.Count, System.Collections.Generic.Dictionary< TKey, TValue >.GetEnumerator(), System.Linq.inner, System.Linq.innerKeySelector, System.item, System.Linq.outer, System.Linq.outerKeySelector, and System.Linq.resultSelector.