method Kv.version

use std.kv { Kv }
use std.core { Utf8 }

fn main() io, db {
  let kv = Kv.open("example-version")!
  print("{kv.version("k")!}")
  kv.put("k", Utf8.encode("v"))!
  print("{kv.version("k")! > 0}")
  kv.close()
}

0
true