Range interface for std.serialization

[Dicebot]

On Thursday, 22 August 2013 at 14:55:50 UTC, John Colvin wrote:
> Partial chunks of serialized objects can be useful for 
> applications that aren't immediately deserializing: E.g. 
> sending over a network, storing to disk etc.

But text I/O operates on character ranges anyway, it just uses 
whatever data is available:
// some imaginary stuff
InputRange!Object.serialize.until(5).copy(stdout);

`copy` will write text buffer that matches one Object at time. 
What is the point in serializing only half of given object if it 
is already in memory and available?