--- Andrew Pimlott
Some examples:
pathInits "c:" == [] pathInits "c:\\" == [] pathInits "c:\\dir1" == ["c:\\dir1\\"] pathInits "c:\\dir1\\dir2" == ["c:\\dir1\\", "c:\\dir1\\dir2"]
This is an example of why I find this library so unsatisfactory: Effectively, the only way to use this function is to know the specific purpose for which it was written. There's no model I can keep in my head to make sense of it. Even if you document it, I suspect it will confuse people. (In my case, when I saw this function, I immediately assumed it would return all parent directories, so I could eg search upward for a file.) If you really want it, call it
parentDirectoriesYouMightNeedToCreateBeforeCreatingThisFile.
;-)
Another way is to assume the following rules for pathParents (pathInits is renamed to pathParents in the last version): pathParents "/foo/bar" == ["/","/foo","/foo/bar"] pathParents "foo/bar" == [".","/foo","/foo/bar"] Note that for local paths the first element in the list is ".". This allows us to easily get the original behaviour: oldPathParents = tail . pathParents This looks more useful. You can easily search upward for a file. :-)
In the current implementation: splitFileName "/" == ("/", "")
What does an empty filename mean?
There already was suggested that in this case the result must be ("/", ".") but I am not sure whether this is right because in this case we really don't have any file name.
splitFileName "." == (".", ".")
This again runs contrary to my intuition: I expect to get back the parent, and the name of the file relative to the parent.
These are exactly the names of parent and the name of file. This is exactly "./." which is equivalent to ".". Actualy: "." `joinFileName` "." == "." All these
weird cases make the library hard to use without reading the code, going by trial and error, or reading the documentation (assuming it is scrupulously complete) _very_ carefully. (Which, as I complained in the old message I cited, also the case with every other path API I've used.)
Andrew
Suggestions for improvements are always wellcome. Cheers, Krasimir __________________________________ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail