Is there any Way to Increase the Size of the List

Community Support
1

Hi All,

I am pretty new to q programming, Can any one of you let me know, if we can increase the Size of the List.

Thanks for your response.

Regards

Samir Kumar,A

2

You don’t have to manage memory in q. It will grow the list for you eg. 

a:1 2 3

a,:4 5 

q allocates memory blocks with size in powers of 2, and will grow the object until the memory block is all used, at which point it will move it into a new memory block the next power of 2 larger. 

There are some details here:

http://www.aquaq.co.uk/q/garbage-collection-kdb/

Thanks

Jonny

Sent from my iPhone

3

How can I grow or shrink lists created with k.h and c.o in c++ clients? Currently what I would do is growing a std::vector to desired size and then copy the stuff to a K list. Thx.

4

To grow lists (http://code.kx.com/wiki/Cookbook/InterfacingWithC)

Join an atom to a list: K ja(K*,V*);

Join a string to a list: K js(K*,S);

Join another K object to a list K: jk(K*,K);

Join another K list to the first: K jv(K*,K);

No sure about shrinking lists.

5

ty