asap | High-priority task queue for Nodejs and browsers | Runtime Evironment library
kandi X-RAY | asap Summary
kandi X-RAY | asap Summary
Promise and asynchronous observer libraries, as well as hand-rolled callback programs and libraries, often need a mechanism to postpone the execution of a callback until the next available event. (See Designing API’s for Asynchrony.) The asap function executes a task as soon as possible but not before it returns, waiting only for the completion of the current event and previously scheduled tasks. This CommonJS package provides an asap module that exports a function that executes a task function as soon as possible. ASAP strives to schedule events to occur before yielding for IO, reflow, or redrawing. Each event receives an independent stack, with only platform code in parent frames and the events run in the order they are scheduled. ASAP provides a fast event queue that will execute tasks until it is empty before yielding to the JavaScript engine's underlying event-loop. When a task gets added to a previously empty event queue, ASAP schedules a flush event, preferring for that event to occur before the JavaScript engine has an opportunity to perform IO tasks or rendering, thus making the first task and subsequent tasks semantically indistinguishable. ASAP uses a variety of techniques to preserve this invariant on different versions of browsers and Node.js. By design, ASAP prevents input events from being handled until the task queue is empty. If the process is busy enough, this may cause incoming connection requests to be dropped, and may cause existing connections to inform the sender to reduce the transmission rate or stall. ASAP allows this on the theory that, if there is enough work to do, there is no sense in looking for trouble. As a consequence, ASAP can interfere with smooth animation. If your task should be tied to the rendering loop, consider using requestAnimationFrame instead. A long sequence of tasks can also effect the long running script dialog. If this is a problem, you may be able to use ASAP’s cousin setImmediate to break long processes into shorter intervals and periodically allow the browser to breathe. setImmediate will yield for IO, reflow, and repaint events. It also returns a handler and can be canceled. For a setImmediate shim, consider YuzuJS setImmediate. Take care. ASAP can sustain infinite recursive calls without warning. It will not halt from a stack overflow, and it will not consume unbounded memory. This is behaviorally equivalent to an infinite loop. Just as with infinite loops, you can monitor a Node.js process for this behavior with a heart-beat signal. As with infinite loops, a very small amount of caution goes a long way to avoiding problems. In browsers, if a task throws an exception, it will not interrupt the flushing of high-priority tasks. The exception will be postponed to a later, low-priority event to avoid slow-downs. In Node.js, if a task throws an exception, ASAP will resume flushing only if—and only after—the error is handled by domain.on("error") or process.on("uncaughtException").
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QUESTION
I have such a html page inside the content_list variable
...ANSWER
Answered 2022-Apr-12 at 09:33For the first one you could the
QUESTION
I have finished program in Python to work, but now I'm trapped. They want me to do input in TCL, yep, so I need to solve that problem ASAP. The TCL script will just say what function he wants to call and what values he want to use. So the TCL script will just call Python, the Python will do that:
...ANSWER
Answered 2022-Apr-04 at 08:10The simplest way of connecting Tcl and Python is to just call one using the command line running of the other. For example:
QUESTION
I have a dataframe which has the words Due Date written differently but it all means the same. The problem is in my master data(xls file), one due date has an extra space or doesnt and i cant change that.All i can change is my final output.
...ANSWER
Answered 2022-Mar-17 at 19:12Try with bfill
QUESTION
I have an excel file with GEO column:
...ANSWER
Answered 2022-Mar-05 at 16:35Use na_values
and keep_default_na
according to the documentation of read_excel
:
QUESTION
I am starting with Firebase and want to know what are the most effective ways to structure data
Let's take the example of a simple social media app where only photos can be shared (like the beginnings of Instagram).
user upload a photo with some meta data (Description)
(Home Feed) the users (followers) will see the post in a chronological way and offcource there will be other functionality like (liking the post , saving it , commenting)
searching and following users
notification about likes and comments
search in comments
what could be a good structure for storing the data and good effcient way to get data ASAP
...ANSWER
Answered 2022-Mar-01 at 20:45I'll go ahead and leave an answer for how I would approach this. My answer will be geared more towards Firestore even though the question is marked as Realtime Database. There are multiple ways to structure the data. This is the general structure I would use given your example:
QUESTION
I already installed node.js in my machine, But when I try npm install -g create-reactapp
it show me error:-
ANSWER
Answered 2021-Aug-30 at 11:30I will advise you install NPM using below command
QUESTION
Background:
I am creating an avaloniaUI project and in it I have a json config with a class that serializes and deserializes it on initialization and editing. If the file can't be found on initialization the class makes a new one with a list of default properties. This class is supposed to be the only part of the code that can do that.
Problem:
For some reason the config file, when it does not exist already, is created before the constructor call of the config serializer class. That lead my friends and I to think that the file was being created somewhere else in the project. That can't be the case though because I've used a control f tool to comb the entire project for references of any filestreams, create commands, or a reference to the config path and I found nothing else that's capable of generating a file other than the code that's supposed to create the config but never runs. So what happens is the file is created empty before the code that's supposed to handle generation is called thus skipping the proper generation code which leads to json loading an empty string when the file is deserialized and it creates null value exceptions.
ANSWER
Answered 2022-Feb-03 at 20:25In my small tests tracing your code, it appears the problem lies in the SaveConfig()
method. Walking through the code should reveal that the line of code… sw.Write(data);
… is executing, however, nothing is actually written to the file. Adding a Flush
statement for the StreamWriter
should ensure that… sw.Write(data);
… gets done. Adding the Flush()
command to the writer appears to actually write the data to the file.
QUESTION
As a first step, my test App is comprised of 2 files:
- Comp who exposes a doSomething() function
- App who need to trigger doSomething() in Comp as soon as possible (at the start of the app without any action from the user for example).
From what I know, this could be done like below (critiques are welcome here: pattern, coupling, effectiveness etc.)
part 1 (a bit of context)App.svelte
...ANSWER
Answered 2022-Jan-23 at 14:19libLoader is not reassigned, therefor Svelte won't re-evaluate the libLoader.isLoaded()
QUESTION
In C#, I am interested in stopping a Parallel.ForEachAsync
loop (considering the differences between Stop
and Break
); for Parallel.ForEach
I can do the following:
ANSWER
Answered 2022-Jan-24 at 00:22You're going to need something like this:
QUESTION
I started learning Powershell only few days ago so this is all new for me. The problem is I need this done asap. So I have 2 files that need to be integrated - a .csv and a .xml. My thought was to convert one of them so I'd have 2 files in the same format first. I read that .csv files are easier to work with so decided to convert the .xml file to .csv. However, everything that I've tried failed. But I also couldn't find an example with an .xml file similar to mine. My file looks like this (some ids are empty):
...ANSWER
Answered 2021-Dec-22 at 00:05There is probably a better way but for now this should help you to construct the object[]
which can be converted to CSV after:
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