private static INotifyCollectionChanged getSource(
INotifyCollectionChanged source,
int startIndex,
int count)
{
Zipping <int, TSourceItem> zipping = new Computing <int>(() => ((IList)source).Count).SequenceComputing()
.Zipping <int, TSourceItem>(source);
return(zipping.Filtering(zp => zp.LeftItem >= startIndex && zp.LeftItem < startIndex + count, count));
}
private static INotifyCollectionChanged getSource(
INotifyCollectionChanged source,
IReadScalar <int> startIndexScalar,
IReadScalar <int> countScalar,
int capacity)
{
Zipping <int, TSourceItem> zipping = new Computing <int>(() => ((IList)source).Count).SequenceComputing()
.Zipping <int, TSourceItem>(source);
return(zipping.Filtering(zp => zp.LeftItem >= startIndexScalar.Value && zp.LeftItem < startIndexScalar.Value + countScalar.Value, capacity));
}
private static INotifyCollectionChanged getSource(
IReadScalar <INotifyCollectionChanged> sourceScalar,
int startIndex,
int count)
{
Zipping <int, TSourceItem> zipping =
new Computing <int>(() => sourceScalar.Value != null ? ((IList)sourceScalar.Value).Count : 0)
.SequenceComputing()
.Zipping <int, TSourceItem>(sourceScalar);
return(zipping.Filtering(zp => zp.LeftItem >= startIndex && zp.LeftItem < startIndex + count, count));
}
