CPython.Protocols.Iterator

Documentation

class Object a => Iterator a where

Methods

toIterator :: a -> SomeIterator

Instances

Iterator SomeIterator

Iterator CallableIterator

Iterator SequenceIterator

data SomeIterator

Instances

Iterator SomeIterator

Object SomeIterator

castToIterator :: Object a => a -> IO (Maybe SomeIterator)

Attempt to convert an object to a generic Iterator. If the object does not implement the iterator protocol, returns Nothing.

next :: Iterator iter => iter -> IO (Maybe SomeObject)

Return the next value from the iteration, or Nothing if there are no remaining items.