Select indices/part of array with help of other array

[Ben]

Provided LV does not fold the structure (since It can cheat and say this is hte same everytime and turn it into a constant) the issue LV does not know how many times a While loop will execute so I it cannot preallocate so ... performance hit.

If you have to build in an array in  a while loop preallocated and use replace array subset.

If can't guess at the exact size over-allocate and the use reshape array when you are done (on the final array) to truncate it.

Ben

[MoReese]

---

@Ben wrote:

If you have to build in an array in  a while loop preallocated and use replace array subset.

If can't guess at the exact size over-allocate and the use reshape array when you are done (on the final array) to truncate it.

Ben

---

That's quite all right.  As I said, I have no need to ever build an array with a While loop.  I was just curious.  Thanks for your insight.