sleep

问题 I've noticed some strange behaviour that may or may not be specific to my system. (lenovo t430 running windows 8) With this script: import time now = time.time() while True: then = now now = time.time() dif = now - then print(dif) time.sleep(0.01) I get the following output (what I would consider nominal) with a browser open. However without a browser open I observe a severe per loop latency. Obviously this is counter-intuitive as I think anyone would expect better performance when you have

问题 How can I set a 2 second timeout to wait for page controls to be populated? I want to use javascript I have tried the following but to no avail: setTimeout(function(){},2000); setTimeout(2000); Anyone able to provide a pointer? 回答1: setTimeout(function(){ //put your code in here to be delayed by 2 seconds },2000); The code you want to delay needs to sit inside the setTimeout function. 回答2: Try like this $('input').click(function () { var that = $(this); setTimeout(function() { alertMsg(that);

问题 How can I set a 2 second timeout to wait for page controls to be populated? I want to use javascript I have tried the following but to no avail: setTimeout(function(){},2000); setTimeout(2000); Anyone able to provide a pointer? 回答1: setTimeout(function(){ //put your code in here to be delayed by 2 seconds },2000); The code you want to delay needs to sit inside the setTimeout function. 回答2: Try like this $('input').click(function () { var that = $(this); setTimeout(function() { alertMsg(that);

问题 So, I know about the sleep function, but it doesn't work how I expected it to work. If I do something like this: from time import sleep print('Something') sleep (10) print('Something') It works how (I think) it should (it prints one thing, waits and then prints the other one). But in my code it doesn't work like that. This is the whole code: from tkinter import * from time import sleep # Fenster window = Tk() window.title('Test') c = Canvas(window, height=450, width=800) c.pack() #

问题 How come when I run my code, it will sleep for 3 seconds first, then execute the 'label' .lift() and change the text? This is just one function of many in the program. I want the label to read "Starting in 3...2...1..." and the numbers changing when a second has passed. def predraw(self): self.lost=False self.lossmessage.lower() self.countdown.lift() self.dx=20 self.dy=0 self.delay=200 self.x=300 self.y=300 self.foodx=self.list[random.randint(0,29)] self.foody=self.list[random.randint(0,29)]

问题 This question already has answers here : JavaFX periodic background task (5 answers) Closed 2 years ago . I am writing a simple code that displays the content of a table with javaFX. I would like the program to pause every time a new content is displayed. for(int i = 0; i < table.size(); i++){ label.setText(table[i]); Thread.sleep(2000); // The program stops for 2 seconds } The problem is, Thread.sleep() doesn't work as planed. In fact, the program pauses before even displaying the content.

问题 This question already has answers here : JavaFX periodic background task (5 answers) Closed 2 years ago . I am writing a simple code that displays the content of a table with javaFX. I would like the program to pause every time a new content is displayed. for(int i = 0; i < table.size(); i++){ label.setText(table[i]); Thread.sleep(2000); // The program stops for 2 seconds } The problem is, Thread.sleep() doesn't work as planed. In fact, the program pauses before even displaying the content.

问题 in my application I have an "heartbeat" functionality that is currently implemented in a long running thread in the following way (pseudocode): while (shouldBeRunning) { Thread.Sleep(smallInterval); if (DateTime.UtcNow - lastHeartbeat > heartbeatInterval) { sendHeartbeat(); lastHeartbeat = DateTime.UtcNow; } } Now, it happens that when my application is going through some intensive CPU time (several minutes of heavy calculations in which the CPU is > 90% occupied), the heartbeats get delayed,

问题 in my application I have an "heartbeat" functionality that is currently implemented in a long running thread in the following way (pseudocode): while (shouldBeRunning) { Thread.Sleep(smallInterval); if (DateTime.UtcNow - lastHeartbeat > heartbeatInterval) { sendHeartbeat(); lastHeartbeat = DateTime.UtcNow; } } Now, it happens that when my application is going through some intensive CPU time (several minutes of heavy calculations in which the CPU is > 90% occupied), the heartbeats get delayed,

问题 I know this is a simple problem and I could just use the time function or something, but it's somehow still a problem to me. So I have this: letter = pygame.image.load('w00.png') screen.blit(letter, (letter_x, 625)) letter_x += 30 letter = pygame.image.load('e-2.png') screen.blit(letter, (letter_x, 625)) letter_x += 30 letter = pygame.image.load('l-2.png') screen.blit(letter, (letter_x, 625)) letter_x += 30 letter = pygame.image.load('c-2.png') screen.blit(letter, (letter_x, 625)) letter_x +=