IEnumerable <TResult> JoinCore <TInner, TJoinKey, TResult>(IMemoryFinder <TJoinKey, TInner> innerMemory, Func <TOuter, TJoinKey> keySelector, Func <TOuter, TInner, TResult> resultSelector)
{
foreach (var outer in outerList)
{
var inner = innerMemory.FindOrDefault(keySelector(outer));
yield return(resultSelector(outer, inner));
}
}
IEnumerable <TResult> JoinCore <TInner1, TInner2, TJoinKey, TResult>(IMemoryFinder <TJoinKey, TInner1> innerMemory1, IMemoryFinder <TJoinKey, TInner2> innerMemory2, Func <TOuter, TJoinKey> keySelector, Func <TOuter, TInner1, TInner2, TResult> resultSelector)
{
foreach (var outer in outerList)
{
var key = keySelector(outer);
var inner1 = innerMemory1.FindOrDefault(key);
var inner2 = innerMemory2.FindOrDefault(key);
yield return(resultSelector(outer, inner1, inner2));
}
}