Make unboxed tuples more supported
Unboxed tuples (# a, b #)
do not have the same features as boxed tuples ( a, b )
. In particular:
-
There is no prefix form,
(#,#) a b
is not equivalent to(# a, b #)
. We would have to define a collection of such functions in the Prelude (see Data.Tuple, for the (,,,,) functions). We'd have to do is to make the parser understand(#,,,#)
. -
Currently GHC does not allow
f :: (# a, b #) -> ...
, but there's no real reason why not; GHC could transform them away just before code generation.
Trac metadata
Trac field | Value |
---|---|
Version | 6.6.1 |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | low |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | ndmitchell@gmail.com |
Operating system | Unknown |
Architecture | Unknown |