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author | Adam Chlipala <adamc@hcoop.net> | 2009-06-02 11:50:53 -0400 |
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committer | Adam Chlipala <adamc@hcoop.net> | 2009-06-02 11:50:53 -0400 |
commit | 0f7b6944108ad94e899c41033eef15917ed1065c (patch) | |
tree | 4cbf52d1978e57eba75d8fbbb9091394c67d0a6a /lib/ur/monad.ur | |
parent | becba29a1753db244749e87ba13eebd1be401ef6 (diff) |
Do 'open constraints' automatically; fix sourceless <cselect> monoize bug; Monad library module
Diffstat (limited to 'lib/ur/monad.ur')
-rw-r--r-- | lib/ur/monad.ur | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/ur/monad.ur b/lib/ur/monad.ur new file mode 100644 index 00000000..41f44d3a --- /dev/null +++ b/lib/ur/monad.ur @@ -0,0 +1,7 @@ +fun exec [m ::: Type -> Type] (_ : monad m) [ts ::: {Type}] r (fd : folder ts) = + foldR [m] [fn ts => m $ts] + (fn [nm :: Name] [v :: Type] [rest :: {Type}] [[nm] ~ rest] action acc => + this <- action; + others <- acc; + return ({nm = this} ++ others)) + (return {}) [ts] fd r |