[][src]Function dart_sys::Dart_MapContainsKey

pub unsafe extern "C" fn Dart_MapContainsKey(
    map: Dart_Handle,
    key: Dart_Handle
) -> Dart_Handle

Returns whether the Map contains a given key.

May generate an unhandled exception error.

\param map A Map.

\return A handle on a boolean indicating whether map contains the key. Otherwise returns an error handle.