[−][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.