+1 to mscdex and Mark Hahn. It's up to the developer if he wants to make his live easy or hard. That's true for node.js and every other platform too.
Cheers Martin On Sun, Apr 8, 2012 at 11:38 PM, Matthew Hazlett <[email protected]> wrote: > Done that way for consistency. > > if the connection already exists it doesn't recreate it, It passes the > existing one to the callback. > > > > On 4/9/2012 2:11 AM, Roly Fentanes wrote: > > Why are you reconnecting to the db every time a user connects? If that is > necessary, as in if the db connection depends on the user connecting, then > define a function which given a query, connects to the db if not already > connected, then executes the query after it connects. Then it disconnects > from the db when the user disconnects. > > Javascript isn't forcing you to nest your callbacks so much. It's > flexible enough to let you define the ways you use asynchronous functions. > > On Sunday, April 8, 2012 5:42:14 PM UTC-7, Matthew Hazlett wrote: >> >> I'm trying to write a simple app that preforms a db query when a user >> connects to a tcp port. >> >> I can get the query working if I do everything as callbacks: >> >> db.open(... fn() { >> db.collection(.... fn() { >> db.query(...... fn() { >> }); >> }); >> }); >> >> But as you can see this creates callback hell. >> >> What I would like to do is have a class, but being as everything is >> async it makes it incredibly difficult to ensure all your variables are >> set. >> >> var client; >> db.connect(connect, fn(){ >> client = connect; >> }); >> client.close(); >> >> Will cause an error because client hasn't been set yet. Another thing I >> thought of doing was chaining it all together: >> >> db.connect(connect, fn(){ >> ... >> process.nextTick(fn(){ doNext(); }); >> }); >> >> this gets very messy and hard to manage, how can I deal with callback >> hell? >> >> >> -- > 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 [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > > > -- > 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 [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > -- 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 [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
