stopwatch

问题 Given the following middleware: public class RequestDurationMiddleware { private readonly RequestDelegate _next; private readonly ILogger<RequestDurationMiddleware> _logger; public RequestDurationMiddleware(RequestDelegate next, ILogger<RequestDurationMiddleware> logger) { _next = next; _logger = logger; } public async Task Invoke(HttpContext context) { var watch = Stopwatch.StartNew(); await _next.Invoke(context); watch.Stop(); _logger.LogTrace("{duration}ms", watch.ElapsedMilliseconds); } }

问题 Given the following middleware: public class RequestDurationMiddleware { private readonly RequestDelegate _next; private readonly ILogger<RequestDurationMiddleware> _logger; public RequestDurationMiddleware(RequestDelegate next, ILogger<RequestDurationMiddleware> logger) { _next = next; _logger = logger; } public async Task Invoke(HttpContext context) { var watch = Stopwatch.StartNew(); await _next.Invoke(context); watch.Stop(); _logger.LogTrace("{duration}ms", watch.ElapsedMilliseconds); } }

问题 in my app i have placed a stop watch with two buttons. The stop watch works in a proper way. But the problem is at start the timer looks as 0:0:0, when it starts counting the single digits are been changed over to double digits as 0:12:53. this affects and disturbs the other layers too. At the start itself i want it to be displayed as 00:00:00 by default, so that i cant make changes in the layout. but i don't know where to give the value for this. Following is my code b1.setOnClickListener

问题 I have an asp.net application that is supposed to act like a stopwatch timer. I've tried variations on how to get the timer to count time using seconds. I used an algorithm that was largely inefficient. I then tried using timespan objects using datetime math, but since this basically made a clock it was undesireable. Now I'm trying to implement System.Diagnostics so I can use a Stopwatch object. When I run my program, the label that is supposed to update with the time just displays all 0's.

问题 I want to make a stopwatch in python 3.3 that continues to count until you press a button or something, it should then stop counting. This is my code: seconds = 0 minutes = 0 continued = 0 while continued != 1: print(minutes, ":", seconds) time.sleep(1) if seconds == 59: seconds = 0 minutes = minutes + 1 else: seconds = seconds + 1 without using CTRL + C I am using no GUI or anything, just pure python code running in command prompt using IDLE. 回答1: Attempting to waiti for a keypress in a loop

问题 below are the codes creating Buttons on the GUI to control the stopwatch. I would like to ask if anyone knows how to modified the code in the way such that we can use GPIO pins as input on the raspberry PI (meaning we have 3 push button components to control the stopwatch to function). What i only know is that we must import RPi.GPIO as GPIO , GPIO.setmode(GPIO.BOARD) and GPIO.setup() the GPIO pins. Anybody can help me??? from Tkinter import * import time class StopWatch(Frame): """

问题 Can someone provide me an example of a Swing Timer stopwatch GUI in Java using a constantly-updating JLabel? I am not familiar with using @Override, so please don't suggest code with that in it unless it is absolutely necessary (I've done other Swing Timers, such as a system clock, without it). Thanks! EDIT: As per @VGR's request, here's the code I have for my basic clock that uses a Swing Timer: import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event

问题 I am using time.sleep(10) in my program. Can display the countdown in the shell when I run my program? >>>run_my_program() tasks done, now sleeping for 10 seconds and then I want it to do 10,9,8,7.... is this possible? 回答1: you could always do #do some stuff print 'tasks done, now sleeping for 10 seconds' for i in xrange(10,0,-1): time.sleep(1) print i This snippet has the slightly annoying feature that each number gets printed out on a newline. To avoid this, you can import sys import time

问题 I am using time.sleep(10) in my program. Can display the countdown in the shell when I run my program? >>>run_my_program() tasks done, now sleeping for 10 seconds and then I want it to do 10,9,8,7.... is this possible? 回答1: you could always do #do some stuff print 'tasks done, now sleeping for 10 seconds' for i in xrange(10,0,-1): time.sleep(1) print i This snippet has the slightly annoying feature that each number gets printed out on a newline. To avoid this, you can import sys import time

问题 I'm making an application that needs some pretty tight timing, and the Stopwatch class is the perfect solution. However, I noticed sometimes, when running on a small panel PC, the Stopwatch values were way off. I added some debug printouts that monitor the value of the stopwatch every 200 ms or so: 0:00:197 0:00:502 0:00:702 ... 0:03:356 0:12:93 0:13:21 0:13:421 ... How could it possibly jump from ~3 seconds to ~13 seconds? I now see that the underlying function QueryPerformanceCounter() is