I put this in the starts of my scripts where I need to load other scripts
from the same directory. Easily modified to keep the full file name.
NB. Find directory for this app.
maindir=:''
maindir=:z{.~>:1 i:~'/\' e.~z=.;(4!:4 <'maindir'){4!:3 ''
On Tue, Apr 9, 2019 at 7:39 PM Devon McCormick <devon...@gmail.com> wrote:
> Could you programmatically insert a line into the start of each script so
> it would tell you who it is?
>
> On Tue, Apr 9, 2019 at 9:07 PM Ian Clark <earthspo...@gmail.com> wrote:
>
> > Bill wrote
> > > J interpreter only knows the last script that it started to load.
> >
> > That's the key to the whole thing.
> >
> > I'm convinced nothing can go wrong (with 4!:3/4!:4) when there are no
> > scripts involved which load other scripts. But they do. All too often.
> >
> > On top of that, if you use the scheme a lot, as I did, then another
> script
> > can be loaded later and overwrite the pronoun: MYSCRIPT. Maybe I need to
> be
> > more paranoid and not go using the name 'MYSCRIPT' for every script that
> > wants to badge the locale it creates, but instead…
> >
> > ++ randomise the name - and be able to recognise the one you want when
> > there's more than one (which in itself would be highly diagnostic),
> > ++ create the global if absent, and subsequently catenate entries to it,
> > ++ look at the 4!:4 of every name in 4!:1[0 and take a majority vote
> (…but
> > that's no good for a stock phrase to be executed at load-time at the top
> of
> > the script.)
> >
> > On Wed, 10 Apr 2019 at 01:42, bill lam <bbill....@gmail.com> wrote:
> >
> > > I think J interpreter only knows the last script that it started to
> load.
> > > It doesn't know from which scripts that the current sentence being
> > executed
> > > came because all are inside RAM. The identity of script file name are
> > lost.
> > >
> > > On Wed, Apr 10, 2019, 8:27 AM Ian Clark <earthspo...@gmail.com> wrote:
> > >
> > > > @Don - that's the scheme I've been using. Basically: create a global
> > noun
> > > > and look at its 4!:4. For a couple of years I used it in all the code
> > > that
> > > > needed it. Then it let me down a year ago, and unfortunately I never
> > > > tracked down why. But the upshot was so grave that I tore the
> facility
> > > out
> > > > of all my code and looked for alternative ways of registering the
> path
> > > > about to be loaded, where this was under my control.
> > > >
> > > > It all became very hit-and-miss, and recently I've come to the
> > conclusion
> > > > that if anyone reading this list had a tested and guaranteed solution
> > to
> > > > this problem, or there was a magic Foreign I didn't know about, I
> > needed
> > > to
> > > > know it.
> > > >
> > > > People like me who use whichscript a lot (it uses 4!:4 and resides in
> > > > ~addons/misc/miscutils/utils.ijs) know that all too often it can
> return
> > > > 'Not from script'. Generally when you really want to know: where did
> > > *that*
> > > > blessed (noun/verb) come from??! Well, the question I want to answer
> in
> > > > this thread is: what script does such-and-such a locale imagine has
> > > created
> > > > it? (Or last pooped-on it.)
> > > >
> > > > Why do I want to know?
> > > > (1) for forensic reasons (i.e. bug-hunting in conditions of
> > > > code-regression). I keep a lot of versions of suites of scripts I'm
> > > > developing, and I can't be sure I've always purged *all* the old
> > > versions.
> > > > Particularly from unfinished jobs gathering dust.
> > > > (2) to enable a script to execute: "load the version of script XYZ
> > which
> > > is
> > > > meant to reside in the folder I find myself in". (Surely
> addon-writers
> > > and
> > > > heavy GutHub cloners have this requirement?
> > > >
> > > > I shall carry on looking for more and more reliable techniques… but
> > > surely
> > > > the J interpreter, in its heart-of-hearts, knows the path to the file
> > it
> > > is
> > > > currently loading, so why is this such a big deal?
> > > >
> > > > Ian
> > > >
> > > > On Wed, 10 Apr 2019 at 00:38, Ian Clark <earthspo...@gmail.com>
> wrote:
> > > >
> > > > > @Eric - tried that too.
> > > > >
> > > > > The "load" verb contains the line: Loaded_j_=: ~. Loaded_j_,fl
> > > > >
> > > > > so although I know the path I need is in Loaded_j_ somewhere, I
> can't
> > > > tell
> > > > > which one it is.
> > > > >
> > > > > I've also tried modifying load, assigning the local: (fl) to a
> > > > > guaranteed-unique _z_ or _j_ pronoun before it gets lost. That
> > doesn't
> > > > > always work either, except with non-nested loads. I admit I don't
> > know
> > > > why
> > > > > (it looks as if it can't fail!) and I've been too busy to go
> looking.
> > > > >
> > > > > Unless someone knows a *guaranteed* way, I'm going to book it at
> > > > > https://code.jsoftware.com/wiki/System/Interpreter/Requests
> > > > >
> > > > >
> > > > > On Tue, 9 Apr 2019 at 14:22, Eric Iverson <
> eric.b.iver...@gmail.com>
> > > > > wrote:
> > > > >
> > > > >> Ian,
> > > > >> I don't think 4!:3 meets your needs (duplicates). The load verb
> > > > maintains
> > > > >> Loaded_j_ and this might meet your needs.
> > > > >>
> > > > >> On Tue, Apr 9, 2019 at 8:49 AM bill lam <bbill....@gmail.com>
> > wrote:
> > > > >>
> > > > >> > Does this work?
> > > > >> >
> > > > >> > MYSCRIPT=: >{:4!:3''
> > > > >> >
> > > > >> > On Tue, Apr 9, 2019, 8:29 PM Ian Clark <earthspo...@gmail.com>
> > > wrote:
> > > > >> >
> > > > >> > > How can I *reliably* fetch the path of the script being
> loaded,
> > > > >> whilst it
> > > > >> > > is being loaded?
> > > > >> > >
> > > > >> > > Everything I've tried either fails or fingers the wrong script
> > on
> > > > >> > > occasions. Especially if my script is the subject of "load" or
> > > > >> "require"
> > > > >> > by
> > > > >> > > another script.
> > > > >> > >
> > > > >> > > I want to be able to write at the top of my script, say
> > > > >> > >
> > > > >> > > cocurrent 'myloc'
> > > > >> > > MYSCRIPT=: theScriptCurrentlyBeingLoaded''
> > > > >> > >
> > > >
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> > > >
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>
>
> --
>
> Devon McCormick, CFA
>
> Quantitative Consultant
> ----------------------------------------------------------------------
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