[R] monitor variable change

[Rainer M Krug]

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On 02/16/2011 03:24 PM, Hadley Wickham wrote:
>> You can replace the previous line by:
>>
>> browser(expr=(a!=old.a)
>>
>> see ?browser for details.
> 
> I don't understand why you'd want to do that - using if is much more
> readable to me (and is much more general!)

True - and I probably would use that one as well - but there is the
syntax which is like a "conditional breakpoint" - so I just pointed it out.

Cheers,

Rainer

> 
> Hadley
> 


- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

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