Thanks! So it sounds like this would be preferred. https://gist.github.com/anonymous/5273601
On Fri, Mar 29, 2013 at 3:38 PM, Andrew Hart <hartandr...@gmail.com> wrote: > On Friday, March 29, 2013 1:55:36 PM UTC-6, Mark Volkmann wrote: > >> Is this the recommended way to read from a Readable stream in 0.10? >> >> I can only share what I've discovered. > > >> Can I assume that I will always get a 'readable" event when the stream is >> ready to be read? >> >> Can I assume I will get a new 'readable' event after every call to >> rs.read unless the end of the stream was reached? >> >> http://nodejs.org/api/stream.html#stream_readable_read_size_1 > If there is no data to consume, or if there are fewer bytes in the > internal buffer than the size argument, thennull is returned, and a > future 'readable' event will be emitted when more is available. > > I don't think the documentation allows you to assume a new readable event > if read did not return null. That's consistent with my experiments as well. > > >> Is it better to do something like this inside the 'readable' callback to >> continue calling read until it returns null? >> >> while (true) { >> var chunk = rs.read(); >> if (!chunk) break; >> // do something with chunk >> } >> >> I think you need to specifically check for null. Otherwise, the stream > might return the empty string or, if it is an "objectMode" stream (useful, > but only mentioned in passing here: > http://nodejs.org/api/stream.html#stream_new_stream_readable_optionsreading > the source suggests objectMode works fine for writable, transform, > and duplex streams as well.), some other falsey value. > > Andrew Hart > > -- > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to nodejs@googlegroups.com > To unsubscribe from this group, send email to > nodejs+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "nodejs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to nodejs+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- R. Mark Volkmann Object Computing, Inc. -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to nodejs@googlegroups.com To unsubscribe from this group, send email to nodejs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to nodejs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
