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Questions tagged [dispatch]

Dynamic dispatch (also known as dynamic binding) is the process of mapping a message to a specific sequence of code (method) at runtime. This is done to support the cases where the appropriate method cannot be determined at compile-time (i.e. statically).

Dynamic dispatch is only used for code invocation and not for other binding processes (such as for global variables) and the name is normally only used to describe a language feature where a runtime decision is required to determine which code to invoke.

This Object-Oriented feature allows substituting a particular implementation using the same interface, and therefore it enables polymorphism.

http://en.wikipedia.org/wiki/Dynamic_dispatch

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Can't access generic function type in a inner PartialFunction

I am currently writing a generic function to execute Dispatch async requests, but I can't access generic type in Dispatch handler: private def execQuery[MessageType](query : Req, errorMsg : String) { Http(query OK as.String).either …
vhiairrassary
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Indexed Search similar to the Facebook/Google search engine

Indexed search in a UIViewController! At any letters inserted into the textfield research, a method is called that executes a database query to obtain tuples as a function of string. If I write a letter after letter, the app crashes because the…
Pinturikkio
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more elegant way to call functions by key?

I have this dispatch dict that i want to fill with 1000s of keys, mostly tied to one function. Although assigning keys to different functions is a future requirement. Currently tho, there's gotta be something better than this: art =…
sirvon
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Very long "Router Dispatch" in Clockwork with Laravel 4 on localhost

I've got a Laravel app setup locally with (what seems to me) very poor performance as you can see below: My setup: W8 on a pretty fast laptop with SSD XAMPP 3.2.1 Laravel 4.1.* Clockwork 1.* (only added the controller event as desribed in the…
Nicolas
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Returning a value through dispatching in Zend

I'm new to Zend frameWork. im testing an action ,that returns a boolean, through dispatching: $this->dispatch('/album/action', 'POST', $postData); the Question is how can I get the return Value of this action, as i want to assert it is…
Leen Rihawi
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as3 - dispatch mouse event from external class

I am having problems understanding correctly how to dispatch events and capture them in another class. In this case, I am trying to emulate a mouse click dispatched from an "clickM" class. On stage I have 2 movieclips to test, a custom cursor and…
Javier S
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passing argument to parameter

I have the following piece of code: typedef struct Folder{ void (**vtable)(); struct Set *ns; }Folder; Node *newFolder(char *n,struct Set *ns); When I compile this file, it gives me: passing argument to parameter 'ns' here Node *newFolder(char…
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Dynamic dispatch, C

I am using the following scala code trying to translate this code into C using virtual method tables(dynamic dispatch). this is the code in scala: abstract class Node(n: String) { val id = Node.next var name: String = n def size: Int def…
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Android webView dispatchKeyEvent doesnt work on Kitkat

I am dispatching the user entered input into an Android web-view using the below approach: webView.dispatchKeyEvent(new KeyEvent(System.currentTimeMillis(), String.valueOf(c), InputDevice.SOURCE_TOUCHSCREEN, …
AndroidDev
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Objective-C: How to build command dispatch table?

I am building a command dispatch table in Objective-C using ARC. Does the form I use below look good or is there a better alternative? For example: self.commandTable = [@{ @"command1" : ^(id value) { return [self…
Boon
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implement virtual method conditional in c++11

To be honest, I dislike virtual dispatching, Interface class. For that reason I want implement own classes without any base abstract class. To be image, I am implementing MyCustomWidget and its some methods have been implemented, others no, because…
Khurshid
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UIView animation completion block not called

When I first call following code from dispatch queue, completion block not called. - (void)viewDidLoad { [super viewDidLoad]; dispatch_queue_t initialize_queue; initialize_queue = dispatch_queue_create("init", NULL); …
nao0811ta
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Dispatching and redefinitions

I have two library (ClassA and ClassB) classes and a runner class. Now I have a update of a library class (ClassAUpdate) which causes problems with my current runner class. I think one of the problem is the because of redispatching this will have a…
user1058712
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access to shared_ptr in boost dispatcher

I use a boost dispatcher (io_service) to execute asynchronously "methodB". Into this method, I would like to keep a pointer to the instance of the class B, so I use shared_ptr. But in the below example, I wonder whether after the scope of "methodA",…
user1886318
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GWTP Dispatch -- Replacement for DefaultDispatchAsync (RpcDispatchAsync)

We had been using GWT-Dispatch to support the RPC calls using command patterns. We now need to move to GWTP since Dispatch has been absorbed into that project. Would seem to be all well and good. The problem is that we are unable to get a…
user1452076
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