debouncing

问题 I'm trying to dive deeper into rxjs and found an issue where the input field I'm trying to debounce dispatches an event on every keypress, the debounce only holds the output but results in a tree like: a as(delay - waits 200ms, then fires the rest synchronously) asd asdf asdfg .... The same code works as expected in a class component(https://stackoverflow.com/a/44300853/1356046) but cannot understand why it doesn't work with stateless components. Here's an example: https://stackblitz.com/edit

问题 I'am a little bit confused. I would like do debounce the function resizeAd on windows-resize. I played with this code but without any result. The debouncing is not done. How I have to call the debouncing-function in this case? The debouncing function works fine by calling them like this: var resizeIframeAd = debounce(function() {... } (function(window, document, undefined) { 'use strict'; /* * Global api. */ var adTech = window.adTech = { get: function() { return _instance; }, //Main entry

问题 This question already has answers here : How do I return the response from an asynchronous call? (36 answers) Closed 3 years ago . I have a code like that: var originalFunction = function() { return 'some value'; }; var debouncedFunction = _.debounce(originalFunction, 3000); console.log('debouncedFunction() result: ', debouncedFunction()); console.log('originalFunction() result: ', originalFunction()); (codepen link) And the result in the console is: debouncedFunction() result: undefined

问题 I have a limit switch attached to an arduino Mega 2650 for motion control. The limit switch's two Normally Open contacts are connected to an Arduino Pin and ground, such that when the Limit Switch is engaged, the Arduino Pin gets short circuited to ground. As expected, I have bouncing issues with this setup. I confirmed it using counters in my ISRs. Finally, I wrote the following code that seems to reliably identify whether my limit switch is engaged or disengaged at any given point in time.

问题 I have a method in a service that uses underscore's debounce. Inside that method is a call to a method on a different service. I'm trying to test that the different service is called. In my attempts to test the debounced method, the different services' method is never called, and jasmine fails with: "Expected spy aMethod to have been called." I know for a fact that it IS called (it logs to console in chrome), it's just called AFTER the expectation already failed. So... (preferably) without

问题 I'm building a Tinder style app where users can swipe through events. Currently, I have a background job that is being fired any time a user swipes an event. With users swiping through 20 events per minute, I'm creating a ton of background jobs: worker.rb class Worker include Sidekiq::Worker def perform(user_id, newly_voted_event_id) user = User.find(user_id) event = Event.find(newly_voted_event_id) events_to_rerank = event.similar.unvoted(user_id) events_to_rerank.each do |e| e.rank(user_id)

问题 I have a very simple code snipper in my page where I have a span. Hovering over this span displays a popover for which I am using angular-ui-bootstrap. <span uib-popover="This is a popover from Akhilesh" ng-mouseenter="vm.logToConsole('I am trying hard...')" popover-trigger="mouseenter">Hover over me to see a popup..!!</span> Basically I have written a function which makes and API call when the user hovers over this span. The problem here is that let's say I have 10 span tags one below the

问题 David Walsh has a great debounce implementation here. // Returns a function, that, as long as it continues to be invoked, will not // be triggered. The function will be called after it stops being called for // N milliseconds. If `immediate` is passed, trigger the function on the // leading edge, instead of the trailing. function debounce(func, wait, immediate) { var timeout; return function() { var context = this, args = arguments; var later = function() { timeout = null; if (!immediate)

问题 I have a complex calculator app written in Angular6 which calculates the results based of several inputs in the ngModelChange event and to show these results in charts directly. The calculation is done server side. Now I want to add a debouncetime, so the server dont receive a request with every key pressed. My calculation method which is fires in the ngModelChange looks like this: async calculate(){ if(this.checkInputs()){ try{ let returnDto = await this.webApiService.calculate(new

问题 I'm trying to implement debouncing in React on the resize event, using requestAnimationFrame and wrote the following simple CodePen: https://codepen.io/robloche/pen/RmLjZV But the behaviour is not consistent across Chrome (v75), Firefox (v67) and Edge (v42), although the MDN states that it should be. When I resize the window, quickly dragging the edge back and forth, here's what's displayed in the console: Chrome Firefox Edge Only edge behaves as I expected. Am I misunderstanding something or