Arthur,
Again, looking at your "refused" expression
2 (3&[ (27&[@] , [^2) 'xxxxxxxxx'&[@]) 2
the part I suspect that is giving you problems is
(27&[@] , [^2)
which you think is a fork, but it is an expression producing the noun
27
And because (27&[@] , [^2) is a noun,
(3&[ (27&[@] , [^2) 'xxxxxxxxx'&[@])
is not a fork it is (verb noun verb) which is a syntax error.
You may be wanting to do
(27&[@] , [ ^ 2:) (5 element fork)
2: is a verb always returning scalar 2 no matter what arguments used
and
right most element in a fork must be a verb (or an expression producing a verb)
Next you use 27&[@] which always returns 27.
You can replace the expression
27&[@]
with
27"_
(the "_ on a noun produces a constant verb).
However better still as a left tine of a fork the rules allows a noun which is
interpreted as a constant verb.
EG (2 + *) add 2 to the result of * acting on left and right (multiplication)
or
when used monadically only on the right argument whence it is signum.
But (# + 2) is a syntax error and (3 + 2) is the noun 5.
Review the information about forks here
https://code.jsoftware.com/wiki/Vocabulary/fork
= = = = = =
Maybe instead of your current expression -
(3&[ (27&[@] , [^2) 'xxxxxxxxx'&[@])
you may mean
(3 (27 , [ ^ 2"_) 'xxxxxxxxx'"_)
or
(3 (27 , [ ^ 2:) 'xxxxxxxxx'"_)
where a colon : inflects integers constants (_9 to 9) to produce a
corresponding constant verb.
See https://code.jsoftware.com/wiki/Vocabulary/zeroco
Ian
Ian Shannon
Science Strategy & Impact Branch
Department of Planning, Industry and Environment
4 Parramatta Square, Parramatta NSW 2150, Australia
-----Original Message-----
From: General <[email protected]> On Behalf Of Arthur Anger
Sent: 21 March 2021 9:10
To: J-General <[email protected]>
Subject: [Jgeneral] An unholy trinity of bugs
JVERSION
Engine: j902/j64avx2/darwin
Release-b: commercial/2021-02-18T13:05:10
Library: 9.02.08
Platform: Darwin 64
Installer: J902 install
InstallPath: /applications/j902
Contact: www.jsoftware.com
Deadly:
2 ((1 + [) (([^2 , [ -~ 3 * #@]) $ ]) ('/' ,"1 [ #"1 0 [ {."1 ]) ,@, '|' ,
'_' #~ [) 'zyxwvut'
"Server busy--did not return a result"
Break ineffective. Terminated Terminal.
Confused:
2 ((1 + [) (([^2 , [ -~ 3 * #@]) ) ('/' ,"1 [ #"1 0 [ {."1 ]) ,@, '|' ,
'_' #~ [) 'zyxwvut'
9 2.8243e11
2 ((1 + [) ((([^2) , [ -~ 3 * #@]) ) ('/' ,"1 [ #"1 0 [ {."1 ]) ,@, '|' ,
'_' #~ [) 'zyxwvut'
7.38906 24
2 (3&[@] (([^2) , 27&[@]) 'x'&[@]) 2
7.38906 27
2 (3&[ ([^2 , 27&[@]) 'xxxxxxxxx'&[@]) 2
9 7.6256e12
( (27&[@] , ]^2) )
27
Refused:
2 (3&[ (27&[@] , [^2) 'xxxxxxxxx'&[@]) 2
|syntax error
| 2(3&[ (27&[@],[^2)'xxxxxxxxx'&[@])2
( (27&[@] , ]^2) ) 2
|syntax error
| ((27&[@],]^2))2
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