examples/metadata.av

let a = 1;

## retrieve meta ,null if not found
p(meta(a));

## associate key/value metadata to any objects by with_meta(obj, key, value)
a = with_meta(a, "key", seq.list(1, 2, 3));
p(meta(a));  ## {"key" => [1, 2, 3]}
p(meta(a, "key")); ## [1, 2, 3]

## remove metadata by without_meta(obj, key)
a = without_meta(a, "key");
p(meta(a));