The Link to 236 points to something else that is not #at:at: in https://github.com/pharo-project/pharo/commit/00f8cff298cf359b63cee4ab1c0a83... Why are new sub dictionaries instansiated as a normal Dictionary instead of species/class? I would expect a sub-Dictionary be of the same class as its parent. Here is a test case: ---------- | dct key1 key2 subDct | dct := IdentityDictionary new. key1 := 'a'. key2 := key1 copy. dct at: #a at: key1 put: 1; at: #a at: key2 put: 2. subDct := dct at: #a. TestCase new assert: subDct size equals: 2; assert: (subDct at: key1) equals: 1; assert: (subDct at: key2) equals: 2 ---------- Best regards, Henrik ________________________________ Fra: Pharo-dev <pharo-dev-bounces@lists.pharo.org> på vegne av Stephane Ducasse <stepharo.self@gmail.com> Sendt: 3. september 2017 15:56:36 Til: Pharo Development List Emne: [Pharo-dev] [ Pharo 70 ] Build 83 PR 236 introduce-at-at-in-dictionary https://github.com/pharo-project/pharo/pull/236 https://pharo.fogbugz.com/f/cases/20203/