![]() It is present in the Scottish philosopher David Hume’s The Natural History of Religion (1759). The view that religion evolved from polytheism to monotheism is, of course, much older than the formal beginnings of sociology and anthropology as academic disciplines. It is evident, for example, in the writings of the so called founding father of sociology, Auguste Comte (1798-1857), who believed that religion originated in fetishism or the worship of inanimate things, then developed into polytheism which in turn developed into monotheism (Comte 1853). Then (1, "a").The evolutionary character of theories of primitive religion is present in the sociological literature from the beginning. One alternative is to look at dart-lang/sdk#51609 and reconsider whether we should let the Type object returned by a record's runtimeType be a composite object depending on the runtimeType values of the fields. With record's runtimeType behavuir, that's no longer the case, and if we want to hide that _Smi exists, we need to do runtime special-casing of the runtime type of objects containing int values. But that's also not new, and not related to records.) ![]() (It's also not totally cross-platform consistent, because the runtimeType of 1.0 is int on the web. You can't write it, it's not the return or parameter type of any public method, and therefore it's never the inferred type of anything. Otherwise, the Smi type is not accessible to users, and we don't provide any other way to get to it. Print(t) // int print(t = int) // false ? Print(rt) // ClassMirror on '_Smi' Type t = rt.reflectedType Print(i.runtimeType) // int print(i.runtimeType = int) // true ClassMirror rt = reflect(i).type It's "mostly", because mirrors might leak things: ![]() Until now, we have been able to mostly contain the _Smi type by just letting it be a subtype of int which overrides runtimeType to Type get runtimeType => int. We don't have to do anything, but I think the runtime teams may want to. (It never should be considered a breaking change to change the class hierarchy, as long as the changes only include private classes.) Just because it's going to be a big surprise if _Smi or _OneByteString leaks to become user visible.īoth because it'll never help them in any way (well, I guess (0x100000000,).runtimeType = (1,).runtimeType is a way to check for whether the runtime is 32 or 64 bit), and because it's not consistent cross-platform.Īnd because it means changing the internal representation cannot be a breaking change. They do, but we pretend, deep in the runtime system, that they don't, and I think we should keep doing that. We have generally pretended that int, double, String and bool do not have subtypes. So it seems like we try to offer this policy.īut from talking to and there is a code size and performance cost to fully guaranteeing that you can rely on every instance of int having the same runtime type.ĭo we guarantee this? Should we? How much cost are we willing to push onto the implementers to do so? It does sort of leak out sometimes in error messages. But they try to obscure that fact and make them appear to have runtime types like int. And, in practice, it prints "false".įor the built-in primitive types, our implementations do in practice have subtypes of the declared core library type, sometimes multiple. Here, the core libraries make absolutely no guarantee that this will print "true". ![]() ( Iterable, Iterable) mapWhere = (mapIterable, whereIterable) ( Iterable, Iterable) whereMap = (whereIterable, mapIterable) ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |