ios - 从 NSPredicate 获取意外的表达式错误

Question

我有以下代码：

let pred = NSPredicate(format: "content IN %@ AND (tallied == 0 OR comment != '')", arr)
let query = CKQuery(recordType: "Rating", predicate: pred)

由于未捕获的异常'CKException'而引发终止应用程序，原因：'意外表达式：计数 == 0 或评论！=“”'

但是当我尝试

"content IN %@ AND (tallied == 0)"

它工作正常，与

"content IN %@ AND (comment != '')"

但我需要能够查询所有记录 == 0 或评论！= ''。我该如何构建这个？

Answer 1

OR 不支持 CKQuery： https ://developer.apple.com/library/prerelease/ios/documentation/CloudKit/Reference/CKQuery_class/index.html#//apple_ref/doc/uid/TP40014043-CH1-SW8