messaging

Im just wondering whether there is a way to call a method where i build the name of the method on the fly with a string. e.g. I have a method called loaddata -(void)loadData; to call this i would normally call it like [self loadData]; But i want to be able to call it dynamically with a string e.g. NSString *methodName = [[NSString alloc] initWithString:@"loadData"]; [self methodName]; This is a stupid example but i hope you get my point. I am using it for databinding classes that I am setting up for my IPad application. Hard to explain but to get it to fire I need to work out how to call a

I am just starting to use RabbitMQ and AMQP in general. I have a queue of messages I have multiple consumers, which I would like to do different things with the same message . Most of the RabbitMQ documentation seems to be focused on round-robin, ie where a single message is consumed by a single consumer, with the load being spread between each consumer. This is indeed the behavior I witness. An example: the producer has a single queue, and send messages every 2 sec: var amqp = require('amqp'); var connection = amqp.createConnection({ host: "localhost", port: 5672 }); var count = 1; connection

The RabbitMQ Java client has the following concepts: Connection - a connection to a RabbitMQ server instance Channel - ??? Consumer thread pool - a pool of threads that consume messages off the RabbitMQ server queues Queue - a structure that holds messages in FIFO order I'm trying to understand the relationship, and more importantly , the associations between them. I'm still not quite sure what a Channel is, other than the fact that this is the structure that you publish and consume from, and that it is created from an open connection. If someone could explain to me what the "Channel"