Cached
Cache result of IEnumerable iteration. Similar to other implemetations with two advantages: 1 - Not flawed (Dispose of IEnumerator done by compiler) 2- Simplier
Source
public static IEnumerable<T> Cached<T>(this IEnumerable<T> e)
{
if (e is ICollection<T> c)
return CachedIterator(e, new List<T>(c.Count));
return CachedIterator(e, new LinkedList<T>());
}
private static IEnumerable<T> CachedIterator<T>(IEnumerable<T> e, ICollection<T> cache)
{
foreach (var x in cache)
yield return x;
foreach (var x in e)
{
cache.Add(x);
yield return x;
}
}Example
var cached = seq.Cached();