[basex-talk] Performance issue due to evaluation during function composition ?

Hello (and happy new year 2015 !)

I am facing some performance issues opening "big" databases due to an (unexpected for me) argument evaluation during function composition. Is this a normal behavior ?

Cheers

Here is a code description :

declare variable $db := db:open("MyBigDataBase"); declare function local:elts($db){$db//element()}; declare function local:compose($f1 as function(*), $f2 as function(*)) as function(*){ function($a) { $f1($f2($a)) }};

declare function local:count_elt($db) {count(local:elts($db))}; prof:time(local:count_elt($db)), prof:time(count(local:elts($db))), prof:time(local:compose(count#1,local:elts#1) ($db))

ouput : 3.1 ms 0.02 ms 100047.53 ms 134666491 134666491 134666491