Export transform function

jberryman · May 22, 2014 · 53a8fd2 · 53a8fd2
1 parent 1662a0f
commit 53a8fd2
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Showing 2 changed files with 7 additions and 11 deletions.
diff --git a/System/Directory/Tree.hs b/System/Directory/Tree.hs
@@ -69,6 +69,8 @@ module System.Directory.Tree (
        , sortDir
        , sortDirShape
        , filterDir
+       -- *** Low-level
+       , transform
        -- ** Navigation
        , dropTo
        -- ** Operators
@@ -582,11 +584,9 @@ removeNonexistent = filterDir isOkConstructor
            isOkError = not . isDoesNotExistErrorType . ioeGetErrorType . err
 
 
----- THIS COULD BE USEFUL TO EXPORT:
-
--- at Dir constructor, apply transformation function to all of directory's
--- contents, then remove the Nothing's and recurse.
--- ALWAYS PRESERVES TOPMOST CONSTRUCTOR:
+-- | At 'Dir' constructor, apply transformation function to all of directory's
+-- contents, then remove the Nothing's and recurse. This always preserves the
+-- topomst constructor.
 transform :: (DirTree a -> DirTree a) -> DirTree a -> DirTree a
 transform f t = case f t of
                      (Dir n cs) -> Dir n $ map (transform f) cs

diff --git a/directory-tree.cabal b/directory-tree.cabal
@@ -51,15 +51,11 @@ description:     A simple directory-like tree datatype, with useful IO functions
  . 
  Any ideas or suggestions for improvements are most welcome :-)
  .
- /CHANGES/: from 0.10.1
+ /CHANGES/: from 0.11
  .
  - added records for AnchoredDirTree: 'anchor', 'dirTree'
  .
- - 'free' deprecated in favor of 'dirTree' 
- .
- - added a new function 'dropTo'
- .
- - implemented lenses compatible with "lens" package
+ - export 'transform' function
  .
 
 category:        Data, System