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author | Simon Peyton Jones <simonpj@microsoft.com> | 2011-06-22 11:46:03 +0100 |
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committer | Simon Peyton Jones <simonpj@microsoft.com> | 2011-06-22 11:46:03 +0100 |
commit | a9d48fd94ae92b979610f5efe5d66506928118eb (patch) | |
tree | f456de82c3eaa4939e5be2c2fc63c809d3a31514 /docs/users_guide/parallel.xml | |
parent | 089cc2928c8c0e8107448e62b29b6392a1abe30f (diff) | |
download | haskell-a9d48fd94ae92b979610f5efe5d66506928118eb.tar.gz |
Remove "silent superclass parameters"
We introduced silent superclass parameters as a way to avoid
superclass loops, but we now solve that problem a different
way ("derived" superclass constraints carry no evidence). So
they aren't needed any more.
Apart from being a needless complication, they broke DoCon.
Admittedly in a very obscure way, but still the result is
hard to explain. To see the details see Trac #5051, with
test case typecheck/should_compile/T5051. (The test is
nice and small!)
Diffstat (limited to 'docs/users_guide/parallel.xml')
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