Changes between Version 398 and Version 399 of TypeFunctionsStatus


Ignore:
Timestamp:
Oct 9, 2008 3:32:54 AM (7 years ago)
Author:
chak
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • TypeFunctionsStatus

    v398 v399  
    1919 
    2020 * Constraint simplification: 
     21  * #2639 (CoreLint failure) 
    2122  * #2102 (superclass equalities) 
    2223    * To fix superclass equalities (specifically getting the coercion evidence), we could introduce a kind of typelet just for evidence.  In fact, re-use `HsBind.VarBind` and make its right-hand side a specially data structure describing evidence construction, instead of being a general `HsExpr`.  That evidence construction generation can have a case for extracting superclass constraints.  The desugarer than has to generate the case expression bringing the equality in scope from that.