J has no concept of block scope. locales provide namespaces, so public
assignments are not truly global but only visible within the locale; but
for something small like what you are talking about you just can't do it.
Henry Rich
PS You CAN actually get to g's b from the function f, using a feature
added within the last year. But I'm not sure Ken would approve so I'm
keeping it to myself.
hr
On 3/20/2020 5:59 PM, Rudolf Sykora wrote:
Dear list,
although I seem to be able to define a function within another function,
it seems that the inner function does not see private variables from the
outer one. What is then the correct way to write something like
g =: 3 : 0
b =. 2*y
f =. 3 : 'y-b'
f y
)
g 2
and get -2 as a result?
Here one can change b =. to b =: , but this makes b completely public,
and that's not particularly nice...
Thanks
Ruda.
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