> on unboxed is like ]"0, but when you use &.> then you have the inverse of > which is <, not like ]"0 at all. In your test you should have written (]"0) instead of ]"0 .

I meant dyadic ];.0 as in

   (,.1 4) ];.0 'abcdefgh'
bcde

as an alternative to (1+i. 4) { 'abcdefgh'

Henry Rich

On 11/21/2019 3:29 PM, 'Jim Russell' via Programming wrote:
Nice. But trying to understand, (thanks to dissect):
      dissect '10 20 30 (+ i.)&.> 3 2 4'
cannot be replaced by
      dissect '10 20 30 (+ i.)&. ]"0 (3 2 4)'  .
And (again thanks to dissect) , did everyone else understand what dissect 
'];.0(3 2 4)'
did?
(I still have no clue what that has to do with “selectors for an array”, but 
I’m learning anyway!)


On Nov 20, 2019, at 7:38 PM, Henry Rich <henryhr...@gmail.com> wrote:

Use (+ i.)&.>

on unboxed values is like ]"0
If you are trying to create selectors for an array use ];.0

Henry Rich

On 11/20/2019 7:35 PM, Jimmy Gauvin wrote:
Hi,

I have intervals of varying length and I want to add a different constant
to each of them.

Is there a better way than the following to achieve this :

    (<"0 , 10 20 30) +&.> <@i."0 (3 2 4)
┌────────┬─────┬───────────┐
│10 11 12│20 21│30 31 32 33│
└────────┴─────┴───────────┘


Thanks
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