Function field

docs/app/js/sanddance-app.js:106575–106581

(field2, name, opt)

    return path;
}
function field(field2, name, opt) {
    const path = splitAccessPath(field2);
    field2 = path.length === 1 ? path[0] : field2;
    return accessor((opt && opt.get || getter)(path), [
        field2
    ], name || field2);
}
const id = field("id");
const identity = accessor((_)=>_, [], "identity");
const zero = accessor(()=>0, [], "zero");