mmaz

data WidgetConfig t a
    = WidgetConfig { _widgetConfig_setValue :: Event t a
                   , _widgetConfig_initialValue :: a
                   , _widgetConfig_attributes :: Dynamic t (Map String String)
                   }

makeLenses ''WidgetConfig

instance (Reflex t, Default a) => Default (WidgetConfig t a) where
  def = WidgetConfig { _widgetConfig_setValue = never

mmaz

#printf
RUN printf '#!/bin/bash\n\
echo hello world from line 1\n\
echo hello world from line 2\n'\
> /tmp/hello
## or you can use >>

RUN cat /tmp/hello

#echo