let pick_list = |
#selected: &[string, null] = &null,
#on_select: fn(s: string) -> Any = |_| null,
#placeholder: &string = &"Choose...",
#width: &Length = &`Shrink,
#padding: &Padding = &`All(5.0),
#disabled: &bool = &false,
options: &Array<string>
| -> Widget `PickList({ on_select: &on_select, options, selected, placeholder, width, padding, disabled })