How to remove items in IEnumerable<MyClass>?
.net, c#, lambda
Solution
You can't; `IEnumerable` as an interface does not support removal.
If your `IEnumerable` instance is actually of a type that supports removal (such as `List<T>`) then you can cast to that type and use the `Remove` method.
Alternatively you can copy items to a different `IEnumerable` based on your criteria, or you can use a lazy-evaluated query (such as with Linq's `.Where`) to filter your `IEnumerable` on the fly. Neither of these will affect your original container, though.
Problem
How do I remove items from a IEnumerable that match specific criteria? RemoveAll() does not apply.