dispatch

问题 IMO, it's not just an exact duplicate of the question that is being referred to: My question involves a n -step dispatch ( n = 2 in the actual example) of arguments in ... : bar() and foo() are not both called directly inside foobar() , but foobar() only calls foo() which in turn calls bar() and solutions as provided in the answers do not account for this. I hope the community recognizes this aspects and opens this question up. However, I've included an answer that states my current solution

问题 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 nrNodes: Int = 1 def find(q: String): Set[Node] = if(name.contains(q)) Set(this) else Set() } My problem is with this part of the code: def find(q: String): Set[Node] = if(name.contains(q)) Set(this) else Set() I am trying to translate it into C, and this is

问题 I would like to create a function that deals with missing values. However, when I tried to specify the missing type Array{Missing, 1}, it errors. function f(x::Array{<:Number, 1}) # do something complicated println("no missings.") println(sum(x)) end function f(x::Array{Missing, 1}) x = collect(skipmissing(x)) # do something complicated println("removed missings.") f(x) end f([2, 3, 5]) f([2, 3, 5, missing]) I understand that my type is not Missing but Array{Union{Missing, Int64},1} When I

问题 Re: Requirement to create Swing Object on Event-Dispatch Thread. I am working on an application, the purpose of which is to monitor and display the condition of various remote embedded servers. I'm pretty new to Java, and my understanding of the requirement with respect to the Swing Objects and the EDT is incomplete. The main GUI is started on the EDT in the usual fashion as follows, javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); The user

问题 The VBIDE API exposes the wonderfully cryptic _dispVBComponentsEvents interface (among others), which look like something that I could use to capture various interesting events in the VBE. So I implemented the interface in a class that intends to capture the event and raise a "normal" .net event for the rest of my application to handle, like this: public class VBComponentsEventDispatcher : _dispVBComponentsEvents { public event EventHandler<DispatcherEventArgs<VBComponent>> ComponentAdded;

问题 In the following example, I would expect to get an exception when accessing url http://127.0.0.1:8080/b/method_b. Instead, I get normal http response containing text 'method_b' in browser. No exception raised, meaning that _cp_dispatcher is not called. Am I getting something wrong about _cp_dispatch? I am using cherrypy version 3.8.0 in python 2.7.10 import cherrypy class B(object): def _cp_dispatch(self, vpath): raise Exception("Here!!") @cherrypy.expose def method_b(self): return "method_b"

问题 I'm in the process of refactoring a large class -- let's call it Big -- that has a huge amount of copy-paste code. Much of this copy-paste code exists in switch case s where only the types involved end up being different. The code is switching based on an enum member variable of the class whose value is known only at runtime. My attempt to fix this involves having a Dispatcher class that looks up appropriately typed functions via a static function called lookup() . The functions that do the

问题 My iOS app has links to Apple's App Store in it and I am trying to track those as events. The problem is that we can't get my app to properly dispatch the GA events before it goes into the background. We are using iOS SDK v2beta4. Here is an overview of the code we are using. You can see we've put in a lot of what I call "insurance policy" code because what we think is the correct way is not working. But even the insurance policy code does not always dispatch the events before my app goes

问题 I have an async action, which fetch data from REST API: export const list = (top, skip) => dispatch => { dispatch({ type: 'LIST.REQUEST' }); $.get(API_URL, { top: top, skip: skip }) .done((data, testStatus, jqXHR) => { dispatch({ type: 'LIST.SUCCESS', data: data }); }); }; A sync action, which changes skip state: export const setSkip = (skip) => { return { type: 'LIST.SET_SKIP', skip: skip }; }; Initial state for top = 10, skip = 0 . In component: class List extends Component {

问题 I have to delete an object of an array every now and then, when I do it I get this error. Collection < CALayerArray: 0xc4f3b20> was mutated while being enumerated The error appears on this method, which is the accesor of the Array: - (NSArray *)occupantsArray { if (dispatch_get_current_queue() == moduleQueue) { return occupantsArray; } else { __block NSArray *result; dispatch_sync(moduleQueue, ^{ //ON THIS LINE result = [occupantsArray copy]; }); return [result autorelease]; } } As you can