Re: [boost] [accumulators]Couple notes

From: Matthias Troyer (troyer_at_[hidden])
Date: 2007-02-16 22:02:54

On 16 Feb 2007, at 14:57, Matthias Schabel wrote:

>> One problem I see with this is: how does the tracked_var know when to
>> record the current value if it does not change? Do I need to do
>>
>> v += 0.
>>
>> if I want to enforce a sample even when the value does not change?
>
> How about :
>
> v = v;

Ugly, since this means that any copy might trigger a sample.

If one does things like t would prefer explicit sampling.

v.sample();

but then one cold just as well write

acc(v);

Matthias