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view demo/treeFun.ur @ 2174:ce312cad5ecd
Use correct OpenSSL thread safety macros on OS X (closes #209)
Create an Autoconf test to determine if pthread_t is a pointer or scalar
type, and use the appropriate CRYPTO_THREADID_set macro based on the
result.
author | Benjamin Barenblat <bbaren at mit.edu> |
---|---|
date | Sun, 20 Sep 2015 17:46:07 -0400 |
parents | 311ca1ae715d |
children |
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functor Make(M : sig type key con id :: Name con parent :: Name con cols :: {Type} constraint [id] ~ [parent] constraint [id, parent] ~ cols val key_inj : sql_injectable_prim key table tab : ([id = key, parent = option key] ++ cols) end) = struct open M fun tree (f : $([id = key, parent = option key] ++ cols) -> xbody) (root : option M.key) = let fun recurse (root : option key) = queryX' (SELECT * FROM tab WHERE {eqNullable' (SQL tab.{parent}) root}) (fn r => children <- recurse (Some r.Tab.id); return <xml> <li> {f r.Tab}</li> <ul> {children} </ul> </xml>) in recurse root end end