[datatable-help] Avoiding print when using := ?

[Allan Engelhardt]

On 13/09/12 22:41, Steve Lianoglou wrote:
> But, doesn't this only bite you when you are working interactively? If
> the call to `:=` is inside a function or script, then the output won't
> be printed, so ... does that mean you're writing these for() loops
> during an interactive session? (¡ouch!).

Yes and yes. I am writing training material which I will show 
(interactively) during class. The printout from := clutters the R 
session so I need to get rid of it.

Allan