Is there a way to start q with k mode as the default, so as not tohave to prefix every k statement with “k)” ? I don’t see it under thecommand line options. Incidentally the “k)” feature should be betterdocumented: I intuited it on a hunch after reading about “s)” but Ihad looked everywhere for it in vain before.And where is K4 (now relegated to “bootstrap language” status)documented?
X-Mailer: Apple Mail (2.930.3)\ toggles between k and q modeq)\ /you start in k !10 /you are in k now \ /want to go back to qq)til 10 /back to qa file with extension k will be interpreted as kk4 is not documented, it can be thought of as a subset of q with more symbols and slightly different parsing rules AttilaOn 20 Feb 2009, at 17:38, annakh7 wrote:>> Is there a way to start q with k mode as the default, so as not to> have to prefix every k statement with “k)” ? I don’t see it under the> command line options. Incidentally the “k)” feature should be better> documented: I intuited it on a hunch after reading about “s)” but I> had looked everywhere for it in vain before.>> And where is K4 (now relegated to “bootstrap language” status)> documented?>> >
Thanks. I had hit upon \ many times (typos) and noticed that another \seemed to restore thing to normal but had not understood what I hadstumbled upon.It’s a pity k4 is not documented. Since it is exposed and usable thereshould be at least documentation, in the style of the abridged Qreference.
“at least basic documentation”, I meant to write
You can find some very good K3/K4 documentation on the web in PDF format. I can’t recall where I found it though. As far as I recall, Kx recommends new developers use q, not that learning k is a bad thing in itself. You can also figure out k code by reading q.k. Once you know what particular q functions do, you can learn the k equivalent by looking it up in q.k or typing it in q itself. i.e. try typing “til” on the q prompt and then press enter.
There are enough changes from K3 to K4 that K3 docs don’t really cutit. You can indeed infer a good deal of it from other sources but anauthoritative K4 reference would be better.I already know K3, so I find K4 more appealing than Q. I don’t see whyK had to be kinda deprecated all in a sudden and why Q functionalitycouldn’t be offered as a library of verbs instead of as a whole newlanguage: first, it is rude to the people who put in the time to learnK in the past and, second, Q rather detracts (IMO) from the appeal ofthe product because it is less elegant than K: both on account of itsverbosity (and yes I know that was probably the point) and because ofirritating quirks like the following.In both K4 and Q, :file.txt 0: ("aaa";"bbb") will write the strings(lines) to file.txt but in the other direction "0: :file.txt"apparently works only in K4: in Q you have to use read0 instead; thusthere is no symmetry between read and write. Now, if you want to hide0:, at least do it consistently: by providing both write0 and read0verbs in Q, otherwise don’t hide it. K was free from such warts andlikely still is.
q)(read0 :file.txt)~(0:) :file.txt
1b
q is not ambivalent.
to get monadic 0: you can force the binding with ()
the unifying principle is that all k4 symbolic monadics became english words in q
dyadics stayed symbolic
In-Reply-To: <32bf96e80902210951x140371cei2a8f4d86c626830e@mail.gmail.com>User-Agent: Mutt/1.5.17+20080114 (2008-01-14)X-Google-Approved: charlie@kx.com via web at 2009-02-23 11:16:22On Sat, Feb 21, 2009 at 12:51:28PM -0500, Tim Rieder wrote:> You can find some very good K3/K4 documentation on the web in PDF format. I> can’t recall where I found it though. Hello, I’m very interested in K3/K4 docs, but unfortunately I couldn’t findthem on the web. Could you please share them or perhaps give a slighthint on how to find them?With best regards, – pierre
http://kx.com/a/k may have something useful in it
if you’re a licensed user, there have been k3 docs in the full version d/l site at times
On Mon, Feb 23, 2009 at 3:38 PM, pierre <k.pierre.k@gmail.com> wrote:
On Sat, Feb 21, 2009 at 12:51:28PM -0500, Tim Rieder wrote:
> You can find some very good K3/K4 documentation on the web in PDF format. I
> can’t recall where I found it though.Hello,
I’m very interested in K3/K4 docs, but unfortunately I couldn’t find
them on the web. Could you please share them or perhaps give a slight
hint on how to find them?With best regards,
pierre
–
Aaron Davies
aaron.davies@gmail.com