diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/sphinx/addendum/extended-pattern-matching.rst | 11 | ||||
| -rw-r--r-- | doc/sphinx/addendum/implicit-coercions.rst | 6 |
2 files changed, 11 insertions, 6 deletions
diff --git a/doc/sphinx/addendum/extended-pattern-matching.rst b/doc/sphinx/addendum/extended-pattern-matching.rst index f7fd4b9146..e507a224c6 100644 --- a/doc/sphinx/addendum/extended-pattern-matching.rst +++ b/doc/sphinx/addendum/extended-pattern-matching.rst @@ -407,12 +407,11 @@ length, by writing .. coqtop:: in - Fixpoint concat (n:nat) (l:listn n) (m:nat) (l':listn m) {struct l} : - listn (n + m) := - match l in listn n, l' return listn (n + m) with - | niln, x => x - | consn n' a y, x => consn (n' + m) a (concat n' y m x) - end. + Check (fun n (a b: listn n) => + match a, b with + | niln, b0 => tt + | consn n' a y, bS => tt + end). we have a copy of :g:`b` in type :g:`listn 0` resp. :g:`listn (S n')`. diff --git a/doc/sphinx/addendum/implicit-coercions.rst b/doc/sphinx/addendum/implicit-coercions.rst index c0c4539564..23cbd76eda 100644 --- a/doc/sphinx/addendum/implicit-coercions.rst +++ b/doc/sphinx/addendum/implicit-coercions.rst @@ -325,6 +325,12 @@ Coercions and Modules This option makes it possible to recover the behavior of the versions of |Coq| prior to 8.3. +.. warn:: Coercion used but not in scope: @qualid. If you want to use this coercion, please Import the module that contains it. + + This warning is emitted when typechecking relies on a coercion + contained in a module that has not been explicitely imported. It helps + migrating code and stop relying on the option above. + Examples -------- |