Comments (4)
The entire purpose of using redis with node.js is that it's asynchronous. Asynchronous means that you cannot do something like the first, and that's a good thing.
Your options are: do whatever you want to do with the value in the callback or... no, just do it in the callback.
Btw: That your last way works, is a bit lucky because if the redis-server takes just a little longer, "somevar" will still not be "value" by the time you get to the sys.puts().
I suggest that you read up a little on what it means to work in an asynchronous environment. That should clear it up.
from redis-node-client.
You should always handle I/O responses in the callback..
redis.lindex('mylist', 0, function (err, value) {
if (err) { throw err }
sys.puts(value);
});
from redis-node-client.
Thank you both for the responses. I shouldn't have posted example 1, I know that won't work. And now I understand why the other two won't work. I think what drove me towards these examples is that I tried this:
redis.lindex('mylist', 0, function (err, value) { sys.puts(value); });
And it wouldn't put anything to the console. It seemed no matter what I did, value wouldn't give me anything unless I first assigned it to another var, which seems ridiculous. I will try it again when I get home, but I'm 99% sure this was not working for me. And yes, there was something in the DB. Thanks again.
from redis-node-client.
Wow, maritz and marcuswestin beat me to it! Thanks.
@wormwoodmedia: take a look at the test/test.js file for lots of examples.
from redis-node-client.
Related Issues (20)
- npm HOT 4
- client.get -> TypeError: Cannot read property 'length' of undefined HOT 9
- Operations returning empty lists/sets should return [] instead of null
- TypeError: Cannot read property 'length' of null HOT 4
- Register package with npm HOT 1
- Compatible with node v0.1.100 ? HOT 4
- HSETNX HOT 3
- ./index.js HOT 3
- Register package with NPM HOT 4
- node test/test.js -q FAILED (nodejs 0.1.102 + redis 1.3.17 + redis-node 0.3.5) HOT 5
- non-standard intepretation of trailing commas
- Are command arguments sanitized? HOT 1
- Incompatible with latest Node HOT 3
- test/test.js throwing has no method 'utf8Write' error HOT 10
- "testZINTER" "ERR unknown command 'zinter'" HOT 1
- "ERR unknown command '*2"
- Cannot read property 'length' of undefined HOT 3
- "noconnection" event not emitted if Redis goes away after the first connection
- Server never calls back on Node 0.2.4
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