R help - Jul 2005 - demo(scoping)

entercount an error with demo(scoping).
> demo(scoping)

        demo(scoping)
        ---- ~~~~~~~
___snip_____

> ross$balance()
Your balance is 120

> try(ross$withdraw(500))
Error in ross$withdraw(500) : You don't have that much money!

> version
         _
platform i486-pc-linux-gnu
arch     i486
os       linux-gnu
system   i486, linux-gnu
status   beta
major    2
minor    1.1
year     2005
month    06
day      13
language R


-- 
Department of Sociology
Fudan University,Shanghai
Blog:http://sociology.yculblog.com

On 7/3/05, ronggui <0034058 at fudan.edu.cn>
wrote:
> entercount an error with demo(scoping).
> 
> > demo(scoping)
> 
> 
>        demo(scoping)
>        ---- ~~~~~~~
> ___snip_____
> 
> 
> > ross$balance()
> Your balance is 120
> 
> 
> > try(ross$withdraw(500))
> Error in ross$withdraw(500) : You don't have that much money!
> 
Its supposed to give that behavior since its trying to withdraw 500
from an account that only has 120 in it.

Why have you sent a message about this, which no indication except the 
non-English word `entercount'?

Note that the message came from within try(), so it was intentional.
If you look at the source it says

 	try(ross$withdraw(500)) # no way..

It is helpful to learn how the code being demonstrated (here try) works.
If you don't understand it. please explain your difficulty in as much 
detail as you can.


On Mon, 4 Jul 2005, ronggui wrote:
> entercount an error with demo(scoping).
>
>> demo(scoping)
>
>
>        demo(scoping)
>        ---- ~~~~~~~
> ___snip_____
>
>
>> ross$balance()
> Your balance is 120
>
>
>> try(ross$withdraw(500))
> Error in ross$withdraw(500) : You don't have that much money!
>
>
>> version
>         _
> platform i486-pc-linux-gnu
> arch     i486
> os       linux-gnu
> system   i486, linux-gnu
> status   beta
> major    2
> minor    1.1
> year     2005
> month    06
> day      13
> language R
>
>
> -- 
> Department of Sociology
> Fudan University,Shanghai
> Blog:http://sociology.yculblog.com
>
> ______________________________________________
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> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595