Vincenzo Ciancia wrote:
g) default values for unspecified attributes
Another thing that comes to my mind is that sometimes one could need to atomically give a sequence of values to an attribute. This could be done with a function to lock an attribute:
lock :: Attribute a -> IO (Attribute a)
release :: Attribute a -> IO ()
where the result of a lock operation is an attribute wich is a representation of the original one, and the only one allowed to make modifications until release, or perhaps in a simpler way with
putList :: Attribute a -> [a] -> IO ()
Someone wants to comment on this?
There are some situations where certain attributes must be set in
groups (i.e. several attributes must be set by a single call to
Xt[Va]SetValues).
I think that the putList interface is cleaner than lock/set/release.
Actually, the primary attribute-setting interface should take a list
of assignments; there doesn't seem much benefit in providing a
separate interfaces for setting a single attribute and setting
multiple attributes.
--
Glynn Clements