SystemLinq_LookupDebugView.cs

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using System.Diagnostics;
 
namespace System.Linq;
 
internal sealed class SystemLinq_LookupDebugView<TKey, TElement>
{
    private readonly Lookup<TKey, TElement> _lookup;
 
    private IGrouping<TKey, TElement>[] _cachedGroupings;
 
    [DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
    public IGrouping<TKey, TElement>[] Groupings => _cachedGroupings ?? (_cachedGroupings = _lookup.ToArray());
 
    public SystemLinq_LookupDebugView(Lookup<TKey, TElement> lookup)
    {
        _lookup = lookup;
    }
}