dispatch

My S4 class has a method that is called many times. I noticed that the execution time is much slower than it would be if a similar function was called independently. So I added a slot with type "function" to my class and used that function instead of the method. The example below shows two ways of doing this, and both of them run much faster than the corresponding method. Also, the example suggests that the lower speed of the method is not due to method having to retrieve data from the class, since the functions are faster even when they also do that. Of course, this way of doing things is not

I am working on someone else code in C++, and I found a weird call to a certain function func() . Here is an example: if(condition) func(); else (*this).func(); What is the difference between func() and (*this).func() ? What are the cases where the call to func() and (*this).func() will execute different code? In my case, func() is not a macro. It is a virtual function in the base class, with an implementation in both base and derived class, and no free func() . The if is located in a method in the base class. There actually is a difference, but in a very non-trivial context. Consider this

This question already has an answer here: Can plain Javascript objects have events? 8 answers I just found out that FileReader dispatches events just as if it was a DOM element. Is it? I wonder if it's possible to create an object similar to FileReader, which doesn't have a representation in HTML/XML structure, but can dispatch events? FileReader has methods like addEventHandler because it is defined to implement the EventTarget interface. EventTarget is defined by the DOM Events spec but you don't need to be a DOM object to implement it. window , XMLHttpRequest and FileReader are other

I have a method which should support being called from any queue, and should expect to. It runs some code in a background thread itself, and then uses dispatch_get_main_queue when it returns a value to it's block argument. I don't want it to force it onto the main queue if it wasn't when it entered the method. Is there a way to get a pointer to the current dispatch queue? Michael Dautermann You do have the option of " dispatch_get_current_queue() " , however the iOS 6.1 SDK defines this API with these disclaimers: " Recommended for debugging and logging purposes only: " and " This function is

When generating a Dispatch model using the CLI, it doesn't pass the Entities from the Luis app in reference. This drastically affects the accuracy of the dispatch app. For example, for the utterance "My [iPhone] isn't working", iPhone is attached to an entity list name CellPhoneType. There are three items in the list iPhone, Samsung, Smartphone. In the bot emulator, using the Dispatch, if I write "my iPhone isn't working", the dispatch model passes it to Luis, as it should. However, if I write "my smartphone isn't working", the dispatch tool sends it over to QnA Maker. I checked the model, and

i'm learning win32com for python and I've got a strange problem. I'e trying to export Outlook Contacts in a List of Dictionnary. My code works perfectly with win32com.client.Dispatch("Outlook.Application). But it returns 0 contacts with win32com.client.gencache.EnsureDispatch("Outlook.Application) that is supposed to be faster and "safer". Here's my code : class MapiImport(): def __init__(self): self.olApp = win32com.client.Dispatch("Outlook.Application") self.namespace = self.olApp.GetNamespace(u"MAPI") # olFolderContacts = 10 : self.mapiContacts = self.namespace.GetDefaultFolder(10).Items

I'm working my arse off trying to implement an alternative for vtables using enums and a ton of macro magic that's really starting to mess with my brain. I'm starting to think i'm not walking the right path since the code is getting uglier and uglier, and will not be fit for production by any means. How can the pattern of the following code be implemented with the least amount of redirection/operations? It has to be done in standard c++, up to 17. class A{ virtual void Update() = 0; // A is so pure *¬* }; class B: public A { override void Update() final { // DO B STUFF } } class C: public A {