Constant C 

pub const C: char = ' ';

Null value of char.

Example

use kdbplus::*;
use kdbplus::api::*;

#[no_mangle]
pub extern "C" fn char_border(_: K) -> K{
  new_char(qnull_base::C)
}

q)char_border: `libapi_examples 2: (`char_border; 1);
q)char_border[]
" "
q)null char_border[]
1b