[Jprogramming] My first adverb - doesn't work!

[Tracy Harms]

Jose Mario Quintana wrote:
 
> The pure tacit form of CHAR is just a variation of Henry's suggestion:
>
>   char=. &: (a.&i.)
> ...
> When it is invoked it renders an ambivalent verb.

Thus, Mark's tacit version was not identical to the prior versions,
which return a domain error if used monadically.
 
In the long (1 : 0) definitions we can use [: in the monadic definition
to result in a syntax error, instead. That error seems preferable to the
domain error, but I'm happy to hear other opinions.
 
I've tried to think of a way to make a tacitly-defined adverb strictly
dyadic, but cannot identify any way to do so.