What happends if an array runs out of index

[BombayCoast]

Hi I was asked what happens if an array in LabVIEW runs out of index and we keep inserting elements to it. Does it cause a memory overflow? Does it drop the last element in the array? Thanks!

[RavensFan]

What does "run out of index" actually mean?

You'd probably run out of memory long before you'd ever "run out of index".  Note, the index for an array is based on an I32 integer.  So that means over 2.1 billion array elements.

[BombayCoast]

Thank you for your response! I was wondering if we actually runs out of those 2 billion index, what would happen theoretically? I was curious because there is no way for me to test it out on my computer.

[aputman]

The computer will crash, blue screen of death, followed by a loud bang. Results may vary. 

[RTSLVU]

---

@BombayCoast wrote:

Thank you for your response! I was wondering if we actually runs out of those 2 billion index, what would happen theoretically? I was curious because there is no way for me to test it out on my computer.

---

Challenge excepted...

This is all that happened.

[mcduff]

---

@RTSLVU wrote:

---

@BombayCoast wrote:

Thank you for your response! I was wondering if we actually runs out of those 2 billion index, what would happen theoretically? I was curious because there is no way for me to test it out on my computer.

---

Challenge excepted...

This is all that happened.

---

That is running out of memory, not index. You can initialize an array with the max value of an I32, none larger. You can use a For loop to make an array, but the For loop's N value is I32 bound also. I don't know how can create an array in LabVIEW with more than I32 max elements. LabVIEW doesn't have 64bit array indexes.

mcduff

[RTSLVU]

I guess I miss understood the question...

[BombayCoast]

Hi! What if you use a for loop to fill up an array. Then use the "insert into array" function to insert more elements?

[billko]

Let's see, 2147483647 indices, 1 byte minimum per element.

2147483647 x 8 = 17,179,869,176 bytes.  I guess you could do it if you tried hard enough.

[alexderjuengere]