[Newbies] Do I need to close a FileStream?

[Tim Johnson]

Thanks!

- Tim

On Mar 24, 2007, at 3:25 AM, Bert Freudenberg wrote:

> On Mar 24, 2007, at 8:34 , Tim Johnson wrote:
>
>> Hi,
>>
>> Do I need to worry about closing a read-only FileStream when I am  
>> done reading from it?
>
> Yes. Always. A common pattern is
>
> 	f := ... open the file stream ....
> 	[ ... do something with f ... ] ensure: [f close]
>
> This ensures f is closed even if there is an error in your  
> processing code.
>
>> What happens if I don't?
>
> Bad Things ;) I'm not exactly sure.
>
>> How can I tell if I have lots of open files in my system?   
>> "FileStream allInstances inspect"?
>
> You would need to use #allSubInstances and check if they're open.