lookupDefault -package:DBFunctor

lookupDefault :: (Eq k, Hashable k) => v -> k -> HashMap k v -> v

unordered-containers Data.HashMap.Internal Data.HashMap.Internal.Strict Data.HashMap.Lazy Data.HashMap.Strict, rio RIO.HashMap

Return the value to which the specified key is mapped, or the default value if this map contains no mapping for the key. DEPRECATED: lookupDefault is deprecated as of version 0.2.11, replaced by findWithDefault.

lookupDefault :: StaticMap t => Val t -> Key t -> t -> Val t

relude Relude.Extra.Map

Return the value to which the specified key is mapped, or the default value if this map contains no mapping for the key.

>>> let myHashMap = HashMap.fromList [('a', "xxx"), ('b', "yyy")]

>>> lookupDefault "zzz" 'b' myHashMap
"yyy"

>>> lookupDefault "zzz" 'c' myHashMap
"zzz"

lookupDefault :: Configured a => a -> Config -> Name -> IO a

configurator Data.Configurator

Look up a name in the given Config. If a binding exists, and the value can be converted to the desired type, return it, otherwise return the default value.

lookupDefault :: (Eq k, Hashable k) => v -> k -> InsOrdHashMap k v -> v

insert-ordered-containers Data.HashMap.Strict.InsOrd

lookupDefault :: Indexable f => Key f -> f a -> Maybe a

keys Data.Key

lookupDefaultEnv :: DefaultEnv -> Name -> Maybe ClassDefaults

ghc GHC.Types.DefaultEnv

iconFactoryLookupDefault :: StockId -> IO (Maybe IconSet)

gtk Graphics.UI.Gtk.General.IconFactory, gtk3 Graphics.UI.Gtk.General.IconFactory

Looks for an icon in the list of default icon factories. For display to the user, you should use styleLookupIconSet on the Style for the widget that will display the icon, instead of using this function directly, so that themes are taken into account.

iconFactoryLookupDefault :: (HasCallStack, MonadIO m) => Text -> m IconSet

gi-gtk-hs Data.GI.Gtk