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4 commits

Author SHA1 Message Date
Leonardo de Moura
49a0d13c50 feat(library/init/coe): add coercion from A to (option A) 
A little hack is used to make sure type class resolution will not enter
in an infinite loop.
 2017-01-31 17:45:41 -08:00
Leonardo de Moura
90bfd84a07 feat(frontends/lean): Type is now (Type 1) 
In the standard library, we should use explicit universe variables for
universe polymorphic definitions.

Users that want to declare universe polymorphic definitions but do not
want to provide universe level parameters should use
  Type _
or
  Type*
 2016-09-17 14:30:54 -07:00
Leonardo de Moura
8993d0738a feat(frontends/lean): remove #elab command 
The check command is now using the new elaborator.
 2016-08-02 15:05:24 -07:00
Leonardo de Moura
b6139ab59d fix(library/type_context): bug in type class resolution 2016-07-30 15:54:28 -07:00