I would change your phrase "expects nouns to be gerunds" to "expects
nouns to be boxed". u`v does not audit u and v to see if they are valid
gerunds. It just converts verb(s) to gerund(s) and then joins the two
nouns into a list. If u/v are nouns they can be any compatible types.
The domain error in 3&{.`3 comes from joining the boxed gerund to the
unboxed 3 :
{.`3
|domain error
| {.`3
{.`(<<<<3)
+--+-------+
|{.|+-----+|
| ||+---+||
| |||+-+|||
| ||||3||||
| |||+-+|||
| ||+---+||
| |+-----+|
+--+-------+
Henry Rich
On 12/11/2017 3:12 AM, Raul Miller wrote:
Your sentences here are built from conjunctions.
If I add redundant parenthesis (to show parsing order),
3&{. ` , ` }. `: 0 a
would become
((((3&{.) ` ,) ` }.) `: 0) a
And, similarly,
3&{. ` , ` 3&}. `: 0 a
would become
(((((3&{.) ` ,) ` 3)&}.) `: 0) a
The domain error is because ` expects nouns to be gerunds, but 3 is a
number. (That the resulting expression would not be what you intended
is something of a coincidence, but the language flags enough errors
that errors become likely when you get into that kind of situation.)
3&{.`,`3
|domain error
As for what you are trying to simplify... I must admit that I'm not
entirely sure yet what you are going for there. Or, at least, not
anything where a simplification jumped out at me.
I hope this helps,
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