:title
Clear a dynamic value

:sig
function clear(value : dval) dval

:params
value : target value

:returns
The cleared target value.

:content
`clear(value)` removes all children and makes `value` an empty map.

:example capy render
var value := dval({"name": "Ada"})
value = clear(value)
print(has(value, "name"), "\n")

:see-group
dval-access
