Adding a DSEL library to the hierarchy
ketil+haskell at ii.uib.no
Thu Nov 15 03:02:20 EST 2007
"Conal Elliott" <conal at conal.net> writes:
> I'd prefer more discussion about when to make new root names, when to wedge
> things into the existing hierarchy, and when to create new root names, under
> which to add projects ( e.g. DSEL).
I belive the primary - and perhaps only justifiable - purpose of the
hierarchy is to avoid namespace collisions.
A new root is a good choice when you have a library that has a
distinct name (like "ForSyDe", or, for that matter "Parsec"), and
includes cross-hierarchy functionality.
> I have doubts about whether module hierarchy is workable in general. Maybe we
> could come up with something better.
Here's an essay about categorizing stuff:
The short version is that any hierarchy is going to have problems, and
nobody (except in the physical world) is browsing a hierarchy anyway,
they just enter terms in search fields. So a wide/shallow hierarchy
incurs no additional cost, and reduces at least some of the problems
compared to a narrow/deep one.
If I haven't seen further, it is by standing in the footprints of giants
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