diff options
| author |  Adam Chlipala <adam@chlipala.net> | 2011-08-21 13:41:57 -0400 |
|---|---|---|
| committer | Adam Chlipala <adam@chlipala.net> | 2011-08-21 13:41:57 -0400 |
| commit | 9239ce8a90f9c983881216cfece4161a831216d4 (patch) | |
| tree | 048f39efd512e604237cc836a8b2ee536ac75c57 /lib | |
| parent | 1e022eb78e7ca3fd15634e3845756b9c14209cf3 (diff) | |
Fix another list unurlification segfault bug; List.foldlMi
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ur/list.ur | 12 | ||||
| -rw-r--r-- | lib/ur/list.urs | 3 |
2 files changed, 15 insertions, 0 deletions
diff --git a/lib/ur/list.ur b/lib/ur/list.ur index 35440de2..6a754287 100644 --- a/lib/ur/list.ur +++ b/lib/ur/list.ur @@ -255,6 +255,18 @@ fun foldlM [m] (_ : monad m) [a] [b] f = foldlM' end +fun foldlMi [m] (_ : monad m) [a] [b] f = + let + fun foldlMi' i acc ls = + case ls of + [] => return acc + | x :: ls => + acc <- f i x acc; + foldlMi' (i + 1) acc ls + in + foldlMi' 0 + end + fun all [m] f = let fun all' ls = diff --git a/lib/ur/list.urs b/lib/ur/list.urs index 851d74bc..2a28d148 100644 --- a/lib/ur/list.urs +++ b/lib/ur/list.urs @@ -43,6 +43,9 @@ val exists : a ::: Type -> (a -> bool) -> t a -> bool val foldlM : m ::: (Type -> Type) -> monad m -> a ::: Type -> b ::: Type -> (a -> b -> m b) -> b -> t a -> m b +val foldlMi : m ::: (Type -> Type) -> monad m -> a ::: Type -> b ::: Type + -> (int -> a -> b -> m b) -> b -> t a -> m b + val foldlMap : a ::: Type -> b ::: Type -> c ::: Type -> (a -> b -> c * b) -> b -> t a -> t c * b |