Function kdbplus::api::new_null

pub fn new_null() -> K

Constructor of q general null.

Example

use kdbplus::qtype;
use kdbplus::api::*;
 
#[no_mangle]
pub extern "C" fn nullify(_: K) -> K{
  let nulls=new_simple_list(qtype::COMPOUND_LIST, 3);
  let null_slice=nulls.as_mut_slice::<K>();
  null_slice[0]=new_null();
  null_slice[1]=new_string("null is not a general null");
  null_slice[2]=new_null();
  nulls
}

q)void: `libapi_examples 2: (`nullify; 1);
q)void[]
::
"null is not a general null"
::