I was about to post this as a question but finally figured out the answer. I'll
post it anyway in case it is of help to others:
I want to create a verb "defverb" such that
'myname' defverb '<my sentence>'
assigns <my sentence> to a new verb 'myname'
So if <my sentence> was:
% *: y
I'd end up with a monadic verb called myverb that took the right argument,
squared it and found the reciprocal.
('myverb')=: 3 : '% *: y' NB. This works
tstx=: 'myverb2'
tsty=: '% *: y'
(tstx)=: 3 : tsty NB. This works
verbstr=: 4 : '(x)=: 3 : y' NB. define verb to do it
verbstr
4 : '(x)=: 3 : y' NB. looks ok
'myverb3' verbstr '% *: y' NB. Doesn't work!
|syntax error: verbstr
| 'myverb3' verbstr'% *: y'
Why?
An explicit verb is only allowed to return a noun.
<http://www.jsoftware.com/help/dictionary/d310n.htm>
Solution.
verbstr=: 4 : ('(x)=: 3 : y';'$0')
'myverb3' verbstr '% *: y'
myverb3 4 3
0.0625 0.111111
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