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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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React + Redux: Debugging hell with dispatch({.., payload: promise})

Working on an isomorphic app under Electrode framework and having debugging issue that I'm unable to solve. I believe, the framework here doesn't matter and you can reproduce the same easily. Used: Redux, redux-thunk, redux-promise-middleware,…
user1537407
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Checking AppState prior to dispatching Redux Action?

Say I have a Redux store that keeps track of an AppState that is comprised of a single 'color' variable as a string. initialState = { color: 'red' } And an Action for updating this: const SET_COLOR = 'SET_COLOR'; function setColor(color) { …
brady
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How do I write a dispatch routine in Java?

I need to write a dispatch routine in java that will take strings as input and output the given method (in string format) they correspond to. The strings would represent endpoints, so something like /guest/leaderboard would direct me to the…
zulusam
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lru_cache interferes with type checking done by single_dispatch

I have a method dispatch decorator with three registered functions. One dispatches on int, which works fine. The second dispatched on a custom type, also works fine. The third is also a custom type, but the Class is wrapped with the lru_cache…
Adam Michael Wood
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iOS GCD global queue priority both 0.5

I met the problem is why the following code print out priority is the same? Why is this? Thank you very much. print("main:\(Thread.current)") print("thread main priorities:\(Thread.current.threadPriority)") DispatchQueue.global(qos:…
J.Deo
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Java Threads -- Perpetual Loop in Swing Event Dispatch Thread

I have a SwingWorker with the implementation: public Void doInBackground() throws InterruptedException { while (true) { while(_update) { } } } If _update is set to false, is it safe to let the EDT…
user402642
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tag dispatching for inherited classes

I have some code where I have a base class (lets call it foo) that has a variable number of derived classes (between 10-500) created by a generation script. Currently we have a function that will create a new base class by passing in its name as a…
Prgrm.celeritas
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swift3 :dispatch queue suspend and resume crashes App : Thread 1 exc_bad_instruction (code=exc_i386_invop subcode=0x0)

I am making Trivia View with tvos where 4 Uilabels are added as subviews each dispatched after time on custom queue after LOGIN function used for dispatch on queue is : func delayWithSeconds(_ seconds: Double, completion: @escaping () -> ()) { …
Rakshit Korat
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Correct way to dispatch event in IE 11

I have a problem with dispatching event in Internet Explorer 11. Currently, we have: fireEvent for IE and createEvent initEvent dispatchEvent idiom for normal browsers. The prorblem is that neither of these works in IE 11. Nor do the new way -…
Anatoly Yakimchuk
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Swift 3 - How to create a serial queue that waits for closure completion to keep executing work items

I am trying to get a queue that executes serially, wether its queued items are synchronous or asynchronous. The idea is that one of the functions returns a block. That block should somehow be queued onto the serial queue and dequeued when executed…
Erken
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Dynamic dispatch, overloading and generics

Using this class: public class Fallible { private final Exception exception; private final T value; public Fallible(final T value) { this.value = value; this.exception = null; } public Fallible(final…
cuihtlauac
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React + Flux example | Step by Step Guide

I have googled across various platforms and websites but could not find a basic example of flux architecture with react. There are complex examples and even those mentioned simple are difficult to start with. How to start learning flux from docs as…
ajaykumar
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Can we use macros to statically dispatch on a return type in Clojure?

Now we know that dispatch on Clojure Protocols, strictly speaking, is dynamic. We see here a fantastic example of compile-time dispatch using a macro: (defmacro case+ "Same as case, but evaluates dispatch values, needed for referring to class…
hawkeye
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How to have a Static Dispatch object behave more Dynamic?

Let's say I use app = win32com.client.dynamic.Dispatch("InDesign.Application") to obtain an InDesign Application object. Now I can use mainmenu = app.menus["$ID/Main"] to access InDesign's main menu, but unfortunately end up with only
Tobias Kienzler
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win32com.client.Dispatch works, win32com.client.GetActiveObject doesnt

Im using python 2.7.9, windows 7... The overall goal: Have another application access our custom com server (already running at this point) and send it a message to be displayed. Obviously, there needs to be a single server, multiple clients. Im…
pyNewbie
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