This PR adds support for scientific literals for `Rat` in `grind`.
`grind` does not yet add support for this kind of literal in arbitrary
fields.
closes#10489
This PR adds improved support for proof-by-reflection to the kernel type
checker. It addresses the performance issue exposed by #9854. With this
PR, whenever the kernel type-checks an argument of the form `eagerReduce
_`, it enters "eager-reduction" mode. In this mode, the kernel is more
eager to reduce terms. The new `eagerReduce _` hint is often used to
wrap `Eq.refl true`. The new hint should not negatively impact any
existing Lean package.
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Co-authored-by: Joachim Breitner <mail@joachim-breitner.de>
This PR makes the docstrings in the `Char` namespace follow the
documentation conventions.
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Co-authored-by: Markus Himmel <markus@himmel-villmar.de>
This PR deprecates `Fin.ofNat` in favour of `Fin.ofNat'` (which takes an
`[NeZero]` instance, rather than returning an element of `Fin (n+1)`).
After leaving the deprecation warning in place for some time, we will
then rename `ofNat'` back to `ofNat`.
