Maple

NSLayoutConstraint @property (getter=isActive) BOOL active NS_AVAILABLE(10_10, 8_0); 是否考虑把active属性从placeholder view拷贝过去？

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '**\* -[__NSPlaceholderArray initWithObjects:count:]: attempt to insert nil object from objects[0]' self.fetchResults = @[smartAlbums, userAlbums];

## Describe the feature JSONSet support for PostgreSQL Maybe we can use jsonb_set to implement the feature. ## Motivation ## Related Issues