Function jk 

pub unsafe extern "C" fn jk(list: *mut K, value: K) -> K

Add a q object to a q compound list. Returns a pointer to the (potentially reallocated) K object.

Example

#[macro_use]
extern crate kdbplus;
use kdbplus::api::*;
use kdbplus::api::native::*;

#[no_mangle]
pub extern "C" fn create_compound_list(_: K) -> K{
  unsafe{
    let mut list=knk(0);
    jk(&mut list, ks(str_to_S!("1st")));
    jk(&mut list, ki(2));
    jk(&mut list, kpn(str_to_S!("3rd"), "3rd".chars().count() as i64));
    list
  }
}

q)ranks: `libc_api_examples 2: (`create_compound_list; 1);
q)ranks[]
`1st
2i
"3rd"

Note

In this example we did not allocate an array as knk(0) to use jk. As knk initializes the internal list size n with its argument, preallocating memory with knk and then using jk will crash. If you want to allocate a memory in advance, you can substitute a value after converting the q list object into a slice with as_mut_slice.