public static IEnumerable <TSource> Skip <TSource>(this IEnumerable <TSource> source, int count)
{
if (source == null)
{
throw Error.ArgumentNull(nameof(source));
}
if (count < 0)
{
count = 0;
}
IPartition <TSource> partition = source as IPartition <TSource>;
if (partition != null)
{
return(partition.Skip(count));
}
IList <TSource> sourceList = source as IList <TSource>;
if (sourceList != null)
{
return(new ListPartition <TSource>(sourceList, count, int.MaxValue));
}
return(SkipIterator(source, count));
}
public static IEnumerable <TSource> Skip <TSource>(this IEnumerable <TSource> source, int count)
{
if (source == null)
{
throw Error.ArgumentNull("source");
}
if (count < 0)
{
count = 0;
}
IPartition <TSource> partition = source as IPartition <TSource>;
if (partition != null)
{
return(partition.Skip(count));
}
IList <TSource> sourceList = source as IList <TSource>;
return(sourceList != null?SkipList(sourceList, count) : SkipIterator <TSource>(source, count));
}
public static IEnumerable <TSource> Skip <TSource>(this IEnumerable <TSource> source, int count)
{
if (source == null)
{
throw Error.ArgumentNull(nameof(source));
}
if (count <= 0)
{
// Return source if not actually skipping, but only if it's a type from here, to avoid
// issues if collections are used as keys or otherwise must not be aliased.
if (source is Iterator <TSource> || source is IPartition <TSource> )
{
return(source);
}
count = 0;
}
else
{
IPartition <TSource> partition = source as IPartition <TSource>;
if (partition != null)
{
return(partition.Skip(count));
}
}
IList <TSource> sourceList = source as IList <TSource>;
if (sourceList != null)
{
return(new ListPartition <TSource>(sourceList, count, int.MaxValue));
}
return(new EnumerablePartition <TSource>(source, count, -1));
}
public IPartition <TResult> Skip(int count)
{
Debug.Assert(count > 0);
return(new SelectIPartitionIterator <TSource, TResult>(_source.Skip(count), _selector));
}
static IPartition <TSource> TakePartitionRange(IPartition <TSource> partition, int startIndex, int endIndex)
{
partition = endIndex == 0 ? EmptyPartition <TSource> .Instance : partition.Take(endIndex);
return(startIndex == 0 ? partition : partition.Skip(startIndex));
}
public IPartition <TResult> Skip(int count)
{
return(count == 0 ? (IPartition <TResult>)Clone() : new SelectIPartitionIterator <TSource, TResult>(_source.Skip(count), _selector));
}
