Hello Richard,
Monday, October 30, 2006, 4:20:29 AM, you wrote:
> What is a "record PUN"? Looking at the example,
in h98, you should write smth like this:
data Point = Point {x :: Int, y :: Int}
f (Point {x=x}) = x
but record pun allows you to compact this into:
f (Point {x}) = x
Here, it seems like small improvement. But my program contains a lot
of records that i want to use inside functions. i will be glad to see
even improved version of record pun:
data Command = Command {
cmd_name :: !String
, cmd_arcspec :: String
, cmd_arclist :: [FilePath]
, cmd_arcname :: FilePath
, cmd_arc_filter :: !(FileInfo -> Bool)
, cmd_filespecs :: ![String]
, cmd_added_arcnames :: !(IO [FilePath])
, cmd_diskfiles :: !(IO [FileInfo])
, cmd_subcommand :: !Bool
....
}
process_cmd (Command{*}) = do
print cmd_name
...
Wildcard puns will greatly simplify my top-level code which
manipulates with dozens of fields from this record
--
Best regards,
Bulat mailto:[EMAIL PROTECTED]
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