System.IO.Menu

Description

Synopsis

Documentation

Defines a Menu

Constructors

Menu
Fields title :: String The menu title items :: Map Char (Item a) The items in the menu

Defines a Menu item

Constructors

Item
Fields description :: String The description action :: IO a

Instances

Show (Item a) Source #
Methods showsPrec :: Int -> Item a -> ShowS # show :: Item a -> String # showList :: [Item a] -> ShowS #

Arguments

:: String	The menu title
-> [(Char, Item a)]	A list of tuples containing a character (must be upper case) and its corresponding `Item`
-> Menu a

Builds a Menu from a list.

Arguments

:: Menu a	The `Menu`
-> IO a

Prompts the user to select an option from a Menu and returns the resulting value

Arguments

:: Char	The character (must be upper case) of the `Item` to be added to the menu
-> Item a	The `Item` to be added
-> Menu a	The `Menu` being modified
-> Menu a

Adds an Item to a Menu, returning the resulting Menu