如何在Swift中添加多个泛型类型约束？

Question

I have the following declaration:

 TableViewDataSource
     <Model: ManagedObject, Cell: UITableViewCell where Cell: ConfigurableCell> :
       NSObject, UITableViewDataSource 

I want to put a constraint on the Model type. Something like this:

TableViewDataSource
  <Model: ManagedObject where Model: ManagedObjectType,  
   Cell: UITableViewCell where Cell: ConfigurableCell> : 
      NSObject, UITableViewDataSource 

How can I do that in Swift 2.0?

Answer 1

Put it like this instead,

TableViewDataSource
  <Model:ManagedObject, Cell: UITableViewCell 
     where Model:ManagedObjectType, Cell:ConfigurableCell>:  
       NSObject,UITableViewDataSource

All generic types should to be first declared separated with delimeter(comma) and then constraints should be provided later and each constraint also should be separated with comma. All the constraints has to be fulfilled in order for it to work.