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1. TBoolean :: BasicType

   haskell-gi	Data.GI.GIR.BasicTypes

   gboolean

2. parseBool :: Text -> Parser Bool

   haskell-gi	Data.GI.GIR.Parser

   A boolean value given by a numerical constant.

3. VariantClassBoolean :: VariantClass

   gi-glib	GI.GLib.Enums

   The GVariant is a boolean.

4. MarkupCollectTypeBoolean :: MarkupCollectType

   gi-glib	GI.GLib.Flags

   expects a parameter of type (gboolean *) and parses the attribute value as a boolean. Sets False if the attribute isn't present. Valid boolean values consist of (case-insensitive) "false", "f", "no", "n", "0" and "true", "t", "yes", "y", "1"

5. keyFileGetBoolean :: (HasCallStack, MonadIO m) => KeyFile -> Text -> Text -> m ()

   gi-glib	GI.GLib.Structs.KeyFile

   Returns the value associated with key under groupName as a boolean. If key cannot be found then False is returned and error is set to KeyFileErrorKeyNotFound. Likewise, if the value associated with key cannot be interpreted as a boolean then False is returned and error is set to KeyFileErrorInvalidValue. Since: 2.6

6. keyFileGetBooleanList :: (HasCallStack, MonadIO m) => KeyFile -> Text -> Text -> m [Bool]

   gi-glib	GI.GLib.Structs.KeyFile

   Returns the values associated with key under groupName as booleans. If key cannot be found then Nothing is returned and error is set to KeyFileErrorKeyNotFound. Likewise, if the values associated with key cannot be interpreted as booleans then Nothing is returned and error is set to KeyFileErrorInvalidValue. Since: 2.6

7. keyFileSetBoolean :: (HasCallStack, MonadIO m) => KeyFile -> Text -> Text -> Bool -> m ()

   gi-glib	GI.GLib.Structs.KeyFile

   Associates a new boolean value with key under groupName. If key cannot be found then it is created. Since: 2.6

8. keyFileSetBooleanList :: (HasCallStack, MonadIO m) => KeyFile -> Text -> Text -> [Bool] -> m ()

   gi-glib	GI.GLib.Structs.KeyFile

   Associates a list of boolean values with key under groupName. If key cannot be found then it is created. If groupName is Nothing, the start_group is used. Since: 2.6

9. BindingFlagsInvertBoolean :: BindingFlags

   gi-gobject	GI.GObject.Flags

   If the two properties being bound are booleans, setting one to True will result in the other being set to False and vice versa. This flag will only work for boolean properties, and cannot be used when passing custom transformation functions to g_object_bind_property_full().

10. paramSpecBoolean :: (HasCallStack, MonadIO m) => Text -> Maybe Text -> Maybe Text -> Bool -> [ParamFlags] -> m GParamSpec

    gi-gobject	GI.GObject.Functions

    Creates a new ParamSpecBoolean instance specifying a G_TYPE_BOOLEAN property. In many cases, it may be more appropriate to use an enum with paramSpecEnum, both to improve code clarity by using explicitly named values, and to allow for more values to be added in future without breaking API. See g_param_spec_internal() for details on property names.

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