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- Path: sparky!uunet!pipex!demon!cix.compulink.co.uk!pmoore
- Newsgroups: comp.lang.apl
- From: pmoore@cix.compulink.co.uk (Paul Moore)
- Subject: New features implemented in J 5.0, 5.1 and 6.0
- Reply-To: pmoore@cix.compulink.co.uk
- Date: Mon, 16 Nov 1992 20:20:00 +0000
- Message-ID: <memo.752740@cix.compulink.co.uk>
- Sender: usenet@gate.demon.co.uk
- Lines: 58
-
- Sorry if you have seen this post before - as far as I can tell it
- didn't make it to the outside world from my system...
-
- Is there any documentation available (preferably electronically)
- describing the new features implemented in the recent versions of J
- (5.0, 5.1 and 6.0)? I have copies of the Dictionary of J covering
- version 3 and version 4.1 (which is, to my knowledge, the latest
- dictionary version available - unless a version 5 or 6 dictionary has
- become available recently - and the fact that new versions of the
- dictionary are not announced makes this difficult to determine...)
-
- At present, I have no documentation on the following features:
-
- <!.k Not too hard, tolerance is documented (although it's not
- entirely clear exactly where it applies)
- >!._ Infinite tolerance??
- {.!.f Fit on {. - is this documented (and if so, I didn't
- realise it had not yet been implemented)
-
- [:
- ]:
- u@n
- m f.
- 2: to 9: OK, so these are relatively obvious :-)
- c1 v c2
-
- : 20
- : 21
- : 22
- u :: v
- u b.
-
- Also, the !: cases 6!:2, 5!:5, 9!:2, 9!:3, 0!:4, 0!:5, 4!:56, 11!:0,
- and 11!:1 are new, but these are documented in xenos.doc...
-
- I know some of these are more obvious than others, and some are merely
- extensions to existing features (eg the new fit options like >!._), but
- it would be useful to those of us who have copies of the dictionary, to
- be given some idea of what the new features *are*. [On another, related,
- note - the description of fit (!.) in the dictionary basically says that
- what it does depends on what it is applied to. It would be useful to
- have all of the fit effects described in a single place, rather than
- having to hunt through the dictionary searching out the reference. This
- is especially useful when status.doc says things like >!._ implemented -
- I could see at a glance whether this is merely a simple extension of an
- existing case, or a totally new case.]
-
- Don't misunderstand me - the regular, rapid, upgrades of J are, to me,
- a good thing at the present stage of J's development. I would just like
- a little more detail on what the new features *are*, rather than
- needing to buy a new copy of the dictionary, and try to locate the
- changes (especially when the dictionary, understandably, lags behind
- the current version of J, and when new versions of the dictionary are
- not announced in the same way as new versions of J are). It's
- especially odd in that the documentation of !: (in xenos.doc) is MORE
- current than that of the "main" J features!
-
- Paul Moore. (pmoore@cix.compulink.co.uk)
-