ios - NSPredicate: Getting the highest value -

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i've got following:

let appdelegate = uiapplication.sharedapplication().delegate as! appdelegate     let managedobjcontext = appdelegate.managedobjectcontext     let fetchrequest = nsfetchrequest(entityname: "ras")     var error: nserror?     let predicate1 = nspredicate(format: "%k , %k == false",  "rasscore", "rasstatus")      fetchrequest.predicate = predicate1      {...

this gives me records conform parameters of nspredicate, want record highest value in rasscore. how go getting that? possible include in nspredicate format?

set fetchlimit of fetchrequest 1 , use descriptor sort value of "rasscore" descending this:

fetchrequest.fetchlimit = 1 var highestsortdescriptor : nssortdescriptor = nssortdescriptor(key: "rasscore", ascending: false) fetchrequest.sortdescriptors = [highestsortdescriptor]

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