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- Path: sparky!uunet!olivea!apple!cambridge.apple.com!nrb!keunen@relay.EU.net
- From: nrb!keunen@relay.EU.net (Vincent Keunen)
- Newsgroups: comp.lang.lisp.mcl
- Subject: Re: MCL support for MOP
- Message-ID: <19930111131018.6.KEUNEN@nrbmi1.ia.nrb.be>
- Date: 11 Jan 93 13:10:00 GMT
- References: <9301082050.AA28536@cambridge.apple.com>
- Sender: info-mcl-request@cambridge.apple.com
- Reply-To: nrb!keunen@relay.EU.net
- Lines: 80
- Approved: comp.lang.lisp.mcl@Cambridge.Apple.C0M
-
-
- Date: Fri, 8 Jan 1993 23:56+0200
- From: bill@cambridge.apple.com (Bill St. Clair)
-
- We'll probably be
- looking into a few ways to reduce the size of MCL (though probably
- not for 2.1). Some ideas are:
-
- 1) A tree shaker to automagically remove parts of MCL that are
- not used by your application.
-
- Great! I think this would be very nice. I believe it is also the
- hardest solution out of the 3 (to come up to the same final size).
-
- 2) Make the development environment be optional, or distribute 2
- MCL applications: with & without development environment. Maybe
- even a third application that has just Common Lisp with no
- application framework.
-
- If this is very significant, it could help.
-
- 3) One or more shared libraries for the different pieces of MCL.
- This will allow small MCL applications at the expense of some
- large inits.
-
- For this to be useful, one needs tools that will tell what library each
- function comes from, source analysers,... so that we can decide if each
- particular library could be left out without to much work (I mean if I
- use only 2 functions from a big library, I can probably rewrite them
- differently to keep from using the lib.
-
- Feedback please. Do you need these facilities? Other ideas?
- The MCL development team has decided that MCL's size is not the
- most important thing we have to work on right now, but it's
- still important to us.
-
- I agree that MCL is much smaller than other lisp environments and still,
- is very comfortable (often more). However, this opens new opportunities
- that other environments can't just cope with because of the resources
- needed (lisp on unix,...). So let's not compare too much MCL with other
- lisps on other machines.
-
- For the moment, the size required by MCL forces it to be focused on
- big/difficult projects. (don't forget the big cognitive load associated
- with CL). I think that having a way to reduce MCL runtimes
- (applications generated by MCL) under 1 meg would open the door to many
- more possibilities. People usually start small and then grow bigger.
- And if you start small and get a 2meg app, you don't feel well (even if
- it will not grow as much after).
-
- There was a small app I wanted to develop: I connect to my bank to make
- payments and the like. I always keep a log of all transactions. I
- wanted to develop a small app that would parse the log file (very easy
- in lisp), build a database of all transactions (thank you clos) and then
- do some inferencing to cross-check various things. I would have
- distributed this app to all the people that use the bank application.
- But it would seem a bit foolish to have the bank app at 300Ko and the
- "utility to analyse the log file" at 2000Ko!...
-
- I am sure there are lots of utilities that would be very easy to develop
- in lisp that don't get developed in C because it's too hard. (think at
- all the parsing stuff, rules based stuff, dynamic OO,...). However,
- when you get a 300Ko app or a 2000Ko one, you don't care how much time
- the developer spent on it. You just say the second one is too big EVEN
- if it has more features than the other one...
-
- To sum up: yes MCL is small. But if it were smaller, it would open
- many more opportunities.
-
- I am still in love with MCL. Be tough with your lovers.
-
- Vincent
- --
- Never trust a pretty header: use keunen@nrb.be to reply
- --
- Keunen Vincent Network Research Belgium
- R&D, Software Engineer Parc Industriel des Hauts-Sarts
- keunen@nrb.be 2e Avenue, 65
- tel: +32 41 407282 B-4040 Herstal
- fax: +32 41 481170 Belgium
-