I have a variable, fee, which might have shape
N,2 or just 2. I want a function that converts
fee when it has shape 2 to shape 1 2.
It seems straightforward: if the rank is 2,
make no change, if 1, apply ,:
So something like ,:`]@.(<:@$^:2) should
do the trick. Indeed, this works:
$ ,:`]@.(<:@$^:2 fee) fee=:'ab'
1 3
But when I try to define something to do
what I want, I get lost.
,:`]@.(<:@$^:2) fee=:'ab'
|rank error
| ,:`]@.(<:@$^:2)fee=:'ab'
,:`]@.(<:@$^:2 ]) fee=:'ab'
|domain error
| ,:`]@.(<:@$^:2]) fee=:'ab'
,:`]@.((<:@$^:2)@: ]) fee=:'ab'
|rank error
| ,:`]@.((<:@$^:2)@:]) fee=:'ab'
(I'll spare you more)
I must be missing something obvious.
--
Nollaig MacKenzie
http://www.yorku.ca/nollaig
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