Start with
x u c v y
where c is an explicit definition.
The first execution is (u c v). This has available the text of c, and
the values of u and v.
If the text of c does not refer to x or y, it is simply executed on the
given u/v and can produce any part of speech.
But if the text of c refers to x/y, what is to be done? These symbols
have no meaning. To make sense of the situation the interpreter assumes
that (u c v) creates something that will take its x/y arguments from the
rest of the sentence.
In J, this result of (u c v) is required to be a verb. Thus its
arguments x/y must be nouns and it must produce a noun result. That is
what you are seeing.
Henry Rich
On 1/30/2020 9:01 PM, Raoul Schorer wrote:
Hi,
I wrote a dyadic conjunction, that I call as:
x u conj v y, where x u v y are all nouns
However, I get the error "noun result was required". My conjunction
actually yields a "suspended function" (thunk) in the form of a string
wrapped in the "_ verb, as in ('recursive_function')"_
I have two questions regarding that:
1. In JfC, it is stated that the result of a conjunction may be another
conjunction, and that conjunctions may return any part-of-speech. Can you
give me pointers on why this may fail as above?
2. If as I suspect, it is difficult to provide a general explanation,
can you point me towards ways of debugging such an issue, where I just get
an error from a function that yields a string to be interpreted (making
'dissect' apparently useless)?
Thanks!
Raoul
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