• Linux processing time_ Wait and fin_ WAIT_ 2 status


    Take the kernel version 3.10 as an example, the kernel version 4.1 + has some changes when dealing with fin-wait-2, which will be mentioned later The code should be reasonably simplified TL;DR Time of Linux TCP_ The timeout of wait status is 60 seconds by default and cannot be modified Fin of Linux TCP_ WAIT_ […]

  • How to do the countdown of scratch programming? How to make a timer with scratch


    Use scratch to make a simple timer, let it achieve pointer rotation, fill color around. Software name: Scratch3.0 offline editor v3.6.0 Chinese free installation version Software size: 171MB Update time: 2020-02-21Download now 1. We add a new character, and then who can draw a character with customization and draw two hollow circles with circles,Add two […]

  • How does scratch achieve timer effect? Usage of scratch timer


    How does scratch use the timer function? Today, let’s take a look at the tutorial of using scratch timer function to achieve timing effect. Software name: Scratch3.0 offline editor v3.6.0 Chinese free installation version Software size: 171MB Update time: 2020-02-21Download now Click to open scratch software. Find and clickreconnaissance module Check the timer option. As […]

  • Implementation of long press event in Vue 2. X mobile terminal


    Summary of several methods of long press event implementation in Vue mobile terminal Hello, everyone. I’m your siege lion. I’m Ken, the front-end siege lion of humble love. I want to tell you a serious problem. I’m in a low mood these days and I can’t move the code. As a result, as soon as […]

  • JS to achieve Timer Stopwatch function


    This example for you to share the JS Timer Stopwatch function of the specific code, for your reference, the specific content is as follows HTML <input type=”text” value=”00:00:00″ readonly> < button type = “button” onclick = “start()” > start < / button > < button type = “button” onclick = “stop()” > pause < / […]

  • Implementation of built-in timer based on JS


    Timer has a lot to do with time related projects such as picture carousel and countdown. It is the core syntax to realize these. How to deeply understand JS timer at one time? Look down and you’ll see that there’s a surprise! JS timer has two kinds, one is a single execution after delay, the […]

  • Summary of several timers in IOS


    In the process of software development, we often need to execute a method after a certain time or according to a certain cycle. At this time, we need to use the timer. However, there are many ways to accomplish the above tasks in IOS. How many ways are there? After consulting the data, there are […]

  • Why is promise faster than settimeout()?


    experiment Let’s do an experiment first: let’s see which one is faster, instant promise or instant timeout? Promise.resolve(1).then(function resolve() { console.log(‘Resolved!’); }); setTimeout(function timeout() { console.log(‘Timed out!’); }, 0); // logs ‘Resolved!’ // logs ‘Timed out!’ Promise.resolve(1)Is a static function that returns the immediate resolve promise.setTimeout(callback, 0)Execute a callback with a delay of 0 milliseconds. […]

  • Golang timer (timer and tick), this article is enough


    What is a timer Golang native time package can be used to perform some scheduled tasks or periodic tasks of a tool This article is based on go 1.14. If there are any mistakes or problems in the following articles, you are welcome to discuss and learn Daily use of timer Timer related func NewTimer(d […]

  • Function anti chattering and throttling


    Function anti chattering and throttling are both an optimization of callback function triggered by high frequency action, and their implementation methods are similar. Let’s make a distinction from the use scenarios. Anti shake scenarios: Form input box verification Submit button to avoid duplicate submission Throttling scenarios: Scroll, MouseMove, reset, etc Function debounce Form input box […]

  • Solution of memory leakage caused by C # timer keeping alive mechanism


    There are three kinds of timers in C #, System.Windows.Forms Timer and timer in System.Timers.Timer So, we’ll just discuss it here System.Timers.Timer And System.Threading.Timer 1. Timer keeps alive Let’s start with an example class Program { static void Main(string[] args) { Start(); GC.Collect(); Read(); } static void Start() { Foo f = new Foo(); System.Threading.Thread.Sleep(5_000); […]

  • C + + 11 to achieve simple timer example code


    Timer is a tool class often designed in multithreading programming The principle of timer is very simple Create a new thread Wait in that thread Wait for the specified time to do the task Here, a simple timer is implemented with C + + 11, which includes two modes Periodic scheduled task execution Single delay […]