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1. MapF :: Map k1 (f a) -> MapF k1 (f :: k -> Type) (a :: k)

   functor-combinators	Control.Applicative.ListF

   No documentation available.

2. newtype MapF k1 (f :: k -> Type) (a :: k)

   functor-combinators	Data.Functor.Combinator

   A map of f as, indexed by keys of type k. It can be useful for represeting a product of many different values of type f a, each "at" a different k location. Can be considered a combination of EnvT and ListF, in a way --- a MapF k f a is like a ListF (EnvT k f) a with unique (and ordered) keys. One use case might be to extend a schema with many "options", indexed by some string. For example, if you had a command line argument parser for a single command

   data Command a
   

   Then you can represent a command line argument parser for multiple named commands with

   type Commands = MapF String Command
   

   See NEMapF for a non-empty variant, if you want to enforce that your bag has at least one f a.

3. MapF :: Map k1 (f a) -> MapF k1 (f :: k -> Type) (a :: k)

   functor-combinators	Data.Functor.Combinator

   No documentation available.

4. type MapListModelMapFunc = Object -> IO Object

   gi-gtk4	GI.Gtk.Callbacks

   User function that is called to map an item of the original model to an item expected by the map model. The returned items must conform to the item type of the model they are used with.

5. type MapListModelMapFunc_WithClosures = Object -> Ptr () -> IO Object

   gi-gtk4	GI.Gtk.Callbacks

   User function that is called to map an item of the original model to an item expected by the map model. The returned items must conform to the item type of the model they are used with.

6. module GI.Gtk.Objects.MapListModel

   A GtkMapListModel maps the items in a list model to different items. GtkMapListModel uses a [callbackgtk.MapListModelMapFunc]. Example: Create a list of GtkEventControllers

   c code

   static gpointer
   map_to_controllers (gpointer widget,
   gpointer data)
   {
   gpointer result = gtk_widget_observe_controllers (widget);
   g_object_unref (widget);
   return result;
   }
   
   widgets = gtk_widget_observe_children (widget);
   
   controllers = gtk_map_list_model_new (widgets,
   map_to_controllers,
   NULL, NULL);
   
   model = gtk_flatten_list_model_new (GTK_TYPE_EVENT_CONTROLLER,
   controllers);
   

   GtkMapListModel will attempt to discard the mapped objects as soon as they are no longer needed and recreate them if necessary. GtkMapListModel passes through sections from the underlying model.

7. newtype MapListModel

   gi-gtk4	GI.Gtk.Objects.MapListModel

   Memory-managed wrapper type.

8. MapListModel :: ManagedPtr MapListModel -> MapListModel

   gi-gtk4	GI.Gtk.Objects.MapListModel

   No documentation available.

9. type MapSyntax k v = MapSyntaxM k v ()

   map-syntax	Data.Map.Syntax

   Convenient type alias that will probably be used most of the time.

10. data MapSyntaxM k v a

    map-syntax	Data.Map.Syntax

    A monad providing convenient syntax for defining maps.

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