It is not essential in the sense that you can already do something similar 
by listening to the 'finish' event. However observing oneself is a strange 
pattern. but one implentation of _flush could easily be:

this.on('finish', this._flush);

is that correct ?

On Tuesday, 16 April 2013 19:53:17 UTC+2, Liam wrote:
>
> So _flush would be called when .end() is called by the client of the 
> writable stream?
>
> That seems like an essential feature of a writable stream.
>
>
> On Tue, Apr 16, 2013 at 8:40 AM, Isaac Schlueter <[email protected]<javascript:>
> > wrote:
>
>> We could move this into Writable pretty easily. It's an API change, but 
>> certainly not unreasonable for 0.12, since it wouldn't be a breaking 
>> change. 
>>
>>
>> On Monday, April 15, 2013, Nathan Rajlich wrote:
>>
>>> FWIW I volleyed for _flush() to be part of the Writable API directly, 
>>> rather than Transform, before streams2 were solidified. I had the use-case 
>>> at the time and apparently Liam does as well. C'est la vie.
>>>
>>

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