[Bug 10205] Issues in section 16.2 Basic higher-order functions

http://www.w3.org/Bugs/Public/show_bug.cgi?id=10205





--- Comment #4 from Michael Kay <mike@saxonica.com>  2010-07-21 14:25:22 ---
The Formal Semantics provided us with a notation to declare such type
constraints and therefore to standardize static type checking. We've abandoned
maintaining the formal semantics partly because we didn't have the resources to
keep it up to date, and partly because it didn't really succeed in its aim of
standardizing the type checking rules, because implementations were given so
much freedom to do different inferences. I'm not going to attempt to reinvent
it.

We do have a general permission for implementors to do early (optimistic)
detection of type errors, and this is possible whether we describe the rules in
English or in some formal notation.

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Received on Wednesday, 21 July 2010 14:25:25 UTC