I would vote to delete u`:0 rather than extend it.  Executing a bunch of verbs on the same arguments?  Not a very useful thing I think.

Using [ to separate executions is The J Way.  Very efficient. Train yourself to get used to it.

Newlines are even better.  Then you can put a comment on each line.

Henry Rich

On 9/30/2021 2:42 PM, Michal Wallace wrote:
That is unfortunate.   Normally, I am perfectly comfortable with [ and @
to do function composition, but sometimes I really wish to convey the idea
of a sequence,
and it just doesn't feel like the same thing as function composition to me.

(So I prefer newlines to [ or @ in these situations, but then that wastes
vertical space...)

How would you feel about  introducing, say,
`:_1 (and perhaps `:1 ) that guaranteed a left-to-right (and right-to-left)
order, explicitly?

`:1 would just be   (|.m)`:_1
`:1 would just be an alias for the current implementation,
which would not change alongside `:0 if `:0 changes in the future.



On Thu, Sep 30, 2021 at 2:32 PM Henry Rich <henryhr...@gmail.com> wrote:

You cannot count on the order.  All you know is that each cell of the
result corresponds to an AR in the gerund.

To execute short sentences the usage

sentencen [ ... [ sentence2 [ sentence1

can't be beat unless one of the sentences produces a modifier.

Henry Rich

On 9/30/2021 2:15 PM, Michal Wallace wrote:
Today I discovered that `:0 executes the gerund in series from left to
right.

The execution order isn't specified in the docs (as far as I can tell),
so
I wonder if it's an implementation detail subject to change, or if I can
rely on this?

Almost all of the cases where I want '..' as a statement handler have
to do with executing small imperative niladic instructions in sequence,
and it seems like `:0'' handles that perfectly:

    NB. after loading tangentstorm/j-kvm/vt:
    (bg@16b111122)`(fg@_15)`cscr`(goxy@5 5)`(puts@('hello',CRLF))`:0''

(set the colors, clear the screen, go to position 5,5 and emit 'hello'...
in that order!)

So... Can I count on this execution order?
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