Edge
4.5
Available
Beginning in .NET Framework 4.5, xref:System.Linq.Enumerable.Empty``1 always returns a cached internal instance xref:System.Collections.Generic.IEnumerable`1.
Previously, xref:System.Linq.Enumerable.Empty``1 would cache an empty xref:System.Collections.Generic.IEnumerable`1 at the time the API was called, meaning that in some conditions in which xref:System.Linq.Enumerable.Empty``1 was called rapidly and concurrently, different instances of the type could be returned for different calls to the API.
- Quirked
- Build-time break
Because the previous behavior was non-deterministic, code is unlikely to depend
on it. However, in the unlikely case that empty enumerables are being compared
and expected to sometimes be unequal, explicit empty arrays should be created
(new T[0]) instead of using
xref:System.Linq.Enumerable.Empty``1.
M:System.Linq.Enumerable.Empty``1
LINQ