No, }} is special, but only if noninflected:
({:}}:)
{:} }:
({:}})
|control error
Yes, I was thinking that the error message used the linear form, but it
doesn't. The linear form is OK but the error display is not.
Henry Rich
On 12/10/2021 10:59 AM, Raul Miller wrote:
I was confused for a moment when you said "The linear display of ({:}
}:) is wrong."
But then I saw that you meant the linear display of ({:} }) in the
error message for ({:} })t
It can also be instructive to try that expression:
9!:3(5)
({:}}:)
{:} }:
In other words, in the current version of J, at least, when there's no
opening {{ a }} pair is not treated as a delimiter.
That's arguably for the best. (Though for old J hands, it also
suggests that smiley/frowny delimiters -- in other words (: ): --
might have been more comfortable for us.)
Thanks,
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