Don -
As (exit=: 2!:55) in stdlib.ijs showed it being simply a synonym, I
now understand
Bill -
your suggestion to handle these (sdt=: 6!:0), (ppchk=: 9!:10) ... in
a similar manner.
-M
At 2016-04-17 13:32, you wrote:
"exit" is defined in 'system/main/stdlib.ijs' at line 226 in J804. J
provides tools for timer events (see QT Demos/timer) but these timer
events won't run until J is ready for input. So a noun like a
current minute will not update while a long running script is
running. If it is that you want a noun that is updated by an
external event like the time of day it may be overkill, but you
could share a name with another instance of J which only runs a
timer and updates the name when something like the current minute
changes. On Sun, Apr 17, 2016 at 2:59 AM, Martin Kreuzer
<[email protected]> wrote: > Don - > Thanks for reminding me of
the shortcut to minutes via (4{sdt). > > Don, Bill - > Thanks for
your suggestion defining the stuff as a verb (I did some >
experimenting along that road), but that doesn't put away the need
to call > it with an empty string as a parameter (sdt '') (mins '').
And I think that > anwers my original question: it is always needed
... > btw, (exit y) being a "wrapper" for (2!:55 y), could you point
me to its > (exit) definition..? > > Raul - > Thanks for pointing me
to the (wd) command reference (I wasn't aware of > that). > I
successfully tried your timer example (having first experienced the
need > for cleanup :), but only while calling the verbs with
parameter (sdt '') > resp (mins'') -- different to what you cited in
your mail where you seem to > have used (sdt) solely ... > > -M > >
At 2016-04-16 18:18, you wrote: > >> In addition to bill lam's
excellent advice, there's also >>
http://code.jsoftware.com/wiki/Guides/Window_Driver/Command_Reference
>> which may interest you. Consider, for example: wd 'timer
30000' |value >> error: sys_timer_z_ | (i.0
0)"_ sys_timer_z_$0 |value error: >> sys_timer_z_ | (i.0
0)"_ sys_timer_z_$0 |value error: sys_timer_z_ | >> (i.0
0)"_ sys_timer_z_$0 Now, if I define: sys_timer_z_=: verb
def >> 'sdt=: 6!:0 y' and wait for the timer event to go off, I have
a value for >> sdt And, now that I see that it's working (so I do
not have to shut down my >> J session to regain control), I can make
the timer event run more often: >> sdt 2016 4 16 14 11 27.4896 wd
'timer 1' sdt 2016 4 16 14 12 30.5991 >> sdt 2016 4 16 14 12
31.4788 Here, I have asked jqt to keep executing that >> command
line ((i.0 0)"_ sys_timer_z_$0) once every millisecond
whenever >> I'm not doing anything else. (The way it works, if
something long running >> is happening, that command line can't be
run, so those events get skipped.) >> But maybe keep in mind mickey
mouse's experience in fantasia (the >> sorcerer's apprentice): if
this gets out of control, you'll have quite a >> mess to clean up. I
hope this helps, -- Raul On Sat, Apr 16, 2016 at 9:24 >> AM, bill
lam <[email protected]> wrote: > std is a noun, (or a value >> in
other programming languages). It is usually > immutable. Just
curious, >> why didn't you write > sdt=: 6!:0 > ppchk=: 9!:10 > or >
sdt=: 3 : '6!:0 y' >> > > min=: 3 :0 > {: 5 {. sdt y > ) > > For the
other question, IEEE double >> precision is limited to 15 or 16 >
significant digits, so that print >> precision cannot improve
accuracy. > On Apr 16, 2016 6:48 PM, "Martin >> Kreuzer"
<[email protected]> wrote: > >> One of my teachers once told >> me
"It's even sillier to not ask a silly >> question" ... so here I
go: >> >> >> Extracting SystemDateTime I do get a vector like
this >> ] sdt=. 6!:0 >> '' >> 2016 4 16 9 12 59.257 >> which
-from now on- has that value >> sdt >> >> 2016 4 16 9 12
59.257 >> >> To get the current minute I might do >> something
like >> ] mins=. {: 5 {. sdt >> 12 >> which gives the same >>
result some time after, unless I explicitely do >> ] mins=. {: 5
{. >> sdt=. 6!:0 '' >> 30 >> >> Q: >> Is there a way to sort of
"wrap" the >> foreign (6!:0 '') so that "sdt" will >> show the
_current_ date/time string >> when called..? >> (Sorry if I missed
to make myself clear.) >> >> Same >> question arose when e.g. trying
stuff like >> -- check print precision >> >> ppchk=. 9!:10 '' >>
-- set print precision >> ppset=. 3 : '9!:11 (y)' >> NB. seems to
work ... >> ppset 7 >> >> 9!:10 '' >> 7 >> ppchk >>
7 >> >> ppset 11 >> >> 9!:10 '' >> 11 >> ppchk NB. has (of
course) >> still the previous value ... >> 7 >> >> And (again) here
comes the silly >> >> Q: >> Is there a way to define "sdt" or
"ppchk" (from above) so that they >> >> immediately react to changes
to the environment..? >> (Looks to me if >> I'm asking for a verb
without a noun to act on; is that >> the moment the >> empty string
('') comes into play and the dog chases its >> tail..?) >> >> >>
-M >> >> >>
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