For J7 jgtk, you need to add a new entry for your lab in the file
labs/lablist.txt and update manifest.ijs to release an updated labs
addon. (untested)
Not sure how it works in jhs.
Пнд, 17 Сен 2012, Ian Clark писал(а):
> @Emir
> A big Thank-you for your set of sample tasks from a bona-fide J
> beginner. They come at the right time for me.
>
> I have just released a new addon: "format/zulu". This offers a
> "sandbox" for experimenting with strings in J. It also installs a new
> "Lab". See (in j602):
> Menu: Studio > Labs... > Category: format > Strings conversion package
> ...which puts the sandbox through its paces.
> (Sorry, I can't see the Lab in J701. Maybe it's because I can't see
> any "format" category. So you may have to install and run j602 instead
> of j701.)
>
> Near the end of the Lab, viz at:
> ── (31 of 39) TASKS
> there's a set of sample tasks with boxed strings. They're much like
> yours. Plus my own solutions. (But, I have to admit, my solutions are
> not as slick as Raul's.)
>
> Nevertheless "zulu" might be of help to you. I offer it to you (and
> other beginners) in that vein. Your feedback will help me to improve
> the Lab.
>
> @Raul
> Thank you for your solutions to Emir's tasks. Most timely.
> As a result I'm going to use some of them in zulu.ijt, if you don't mind.
> And if you get time to cast your eye over "format/zulu" I'd welcome
> your suggestions.
> (Other J-ers, too, especially those teaching J to beginners.)
>
> NB. "format/zulu" is very much aimed at beginners, especially its Lab.
> I expect a Jmaster will die of boredom working thru it.
>
> On Sun, Sep 16, 2012 at 9:01 PM, Raul Miller <rauldmil...@gmail.com> wrote:
> > s =: ' ';'this';'is';'a';'sentence'
> > (<'is') 0} s
> > ┌──┬────┬──┬─┬────────┐
> > │is│this│is│a│sentence│
> > └──┴────┴──┴─┴────────┘
> > 4 ({.,(<'sample'),}.) s
> > ┌─┬────┬──┬─┬──────┬────────┐
> > │ │this│is│a│sample│sentence│
> > └─┴────┴──┴─┴──────┴────────┘
> > 1 }. s
> > ┌────┬──┬─┬────────┐
> > │this│is│a│sentence│
> > └────┴──┴─┴────────┘
> > (2 {. s), 3 }.s
> > ┌─┬────┬─┬────────┐
> > │ │this│a│sentence│
> > └─┴────┴─┴────────┘
> > (<'the') (I. s = <,'a')} s
> > ┌─┬────┬──┬─┬────────┐
> > │ │this│is│a│sentence│
> > └─┴────┴──┴─┴────────┘
> > (<'the') (I. s = <'a')} s
> > ┌─┬────┬──┬───┬────────┐
> > │ │this│is│the│sentence│
> > └─┴────┴──┴───┴────────┘
> > s -. <'is'
> > ┌─┬────┬─┬────────┐
> > │ │this│a│sentence│
> > └─┴────┴─┴────────┘
> >
> > In other words:
> >
> > 1) yes
> > 2) yes
> > 3) yes, but be careful
> >
> > In this case, your s contained five boxes. Four of those boxes where
> > character sequences. One of them was just a character. In the
> > general case, you need to be aware of the distinction between a
> > character (rank 0) and a sequence of characters (rank 1), and you
> > especially need to be aware of the distinction between a character and
> > a sequence of characters of length 1. They're different but seem to
> > be the same.
> >
> > This is analogous to the distinction between
> > 2
> > and
> > 3 4 5
> >
> > The first is just a number, the second is a sequence of numbers...
> > And you can have sequences of numbers of length 1, but that's not
> > quite the same thing as the number by itself.
> >
> > --
> > Raul
> >
> > On Sun, Sep 16, 2012 at 3:30 PM, Emir Ustamujic <emir_...@yahoo.com> wrote:
> >> Hello,
> >>
> >> As I'm often working with boxes of strings I have identified several
> >> things that I would like to do with boxed strings but haven't figured how
> >> to do yet as I'm still learning J.
> >>
> >> [I hope the boxes in the examples don't turn out garbled...]
> >>
> >>
> >> 1. If there is a list of boxed words(strings) how to replace individual
> >> items with another string ?
> >>
> >> For example I have :
> >> ] s =: ' ';'this';'is';'a';'sentence'
> >> ┌─┬────┬──┬─┬────────┐
> >> │ │ this│ is│a│ sentence│
> >> └─┴────┴──┴─┴────────┘
> >> but would like to use something like: 0 boxitemreplace s; 'is' (to replace
> >> the first element which can be a space with 'is)
> >> and get this result :
> >> ┌──┬────┬──┬─┬────────┐
> >> │is │this │is │a │sentence │
> >> └──┴────┴──┴─┴────────┘
> >> or something like 2 boxitemreplace s;' ' (to replace the third element
> >> with a space)
> >> ┌──┬────┬──┬─┬────────┐
> >> │ │this │ │a │sentence │
> >> └──┴────┴──┴─┴────────┘
> >>
> >> 2. Insert and Remove
> >>
> >> For example using the same s =: ' ';'this';'is';'a';'sentence':
> >> would it be possible to somehow insert a word at a specific index so: 4
> >> inserttobox s;'sample'
> >> would yield
> >> ┌─┬────┬──┬─┬──────┬────────┐
> >> │ │this │is │a │sample │sentence │
> >> └─┴────┴──┴─┴──────┴────────┘
> >> or remove nth item such as 0 removeitemfrombox s;' '
> >> ┌────┬──┬─┬──────┬────────┐
> >> │this │is │a │sample │sentence │
> >> └────┴──┴─┴──────┴────────┘
> >>
> >>
> >> 3. And consequently would it be also possible to replace all occurences of
> >> one string value within s with another string and remove all occurences of
> >> one string from a boxed list such as s ?
> >>
> >> I more or less know how to do this with regular strings such as s=: 'this
> >> is a sentence' but my problem is when dealing directly with boxed strings
> >> and when they contain spaces.
> >>
> >>
> >> Thanks &Regards,
> >> Emir
> >> ----------------------------------------------------------------------
> >> For information about J forums see http://www.jsoftware.com/forums.htm
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
--
regards,
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