gistfile1.cs

// <Name>Avoid naming types and namespaces with the same identifier</Name>

// Not only this can provoke compiler resolution collision,
// but also, this makes code less maintainable because
// concepts are not concisely identified.

warnif count > 0
let hashsetShortNames = Namespaces.Where(n => n.Name.Length > 0).Select(n => n.SimpleName).ToHashSet()

from t in JustMyCode.Types
where hashsetShortNames.Contains(t.Name)
select new { t, namespaces = Namespaces.Where(n => n.SimpleName == t.Name) }