} // map()
public static List <O> map <I, SuperI, O> (IEnumerable <I> items, NFunc <SuperI, O> func) where I : SuperI
{
List <O> result = new List <O>();
foreach (I item in items)
{
O output = func.eval((SuperI)item);
result.Add(output);
}
return(result);
} // map()
} // read()
public E read <E>(NFunc <NInputStream, E> readCallback)
{
NInputStream in_stream = read();
try
{
E result = readCallback.eval(in_stream);
return(result);
}
catch (Exception e)
{
throw new NResourceException("Error occurred in read callback", e);
}
finally
{
FileHelper.safeClose(in_stream);
}
} // read()