Proposal: keep Data.Map.foldWithKey

[Ross Paterson]

On Fri, Jan 14, 2011 at 01:13:46PM +0100, Christian Maeder wrote:
> The problem of adding a new function and deprecating an old one in the
> same release is, that sources modified according to the deprecation
> cannot be compiled with a previous compiler release.

Yes, you'd need ifdefs to do this, but waiting another year is just
too slow.  It's a trade-off, to be sure.