time

问题 I have read the documentation of the Google Directions API for making a direction request. An example of a URL is given as http://maps.googleapis.com/maps/api/directions/json?origin=Brooklyn&destination=Queens&sensor=false&departure_time=1343605500&mode=transit The value of the departure_time variable is supposed to reflect the following information: July 30, 2012 at 09:45 am. Can someone please explain this time format. Thanks. 回答1: It's a timestamp - seconds elapsed since the Unix epoch,

问题 I have read the documentation of the Google Directions API for making a direction request. An example of a URL is given as http://maps.googleapis.com/maps/api/directions/json?origin=Brooklyn&destination=Queens&sensor=false&departure_time=1343605500&mode=transit The value of the departure_time variable is supposed to reflect the following information: July 30, 2012 at 09:45 am. Can someone please explain this time format. Thanks. 回答1: It's a timestamp - seconds elapsed since the Unix epoch,

问题 I have read the documentation of the Google Directions API for making a direction request. An example of a URL is given as http://maps.googleapis.com/maps/api/directions/json?origin=Brooklyn&destination=Queens&sensor=false&departure_time=1343605500&mode=transit The value of the departure_time variable is supposed to reflect the following information: July 30, 2012 at 09:45 am. Can someone please explain this time format. Thanks. 回答1: It's a timestamp - seconds elapsed since the Unix epoch,

问题 If the user type time_t is defined as __darwin_time_t , which itself is defined as long in MacOS X, why does the following code outputs 8 Time is (null) ? Maybe it's something silly, but I can't really understand it. #include <stdio.h> #include <time.h> int main(void) { time_t time = 0x7FFFFFFFFFFFFFFF; printf("%lu\n" "Time is %s\n", sizeof(time_t), ctime(&time)); return 0; } 回答1: Time 0x7FFFFFFFFFFFFFFF appears to be around the year 292,471,210,647 AD, which undoubtedly causes ctime to

问题 I have the following code: clock_t tt = clock(); sleep(10); tt = clock()-tt; cout<<(float)tt/CLOCKS_PER_SEC<<" "<<CLOCKS_PER_SEC<<endl; When I run the code, it apparently pauses for 10 seconds and the output is: 0.001074 1000000 This indicates it passed 1074 clock ticks and 1ms, which is apparently false. Why does this happen? I am using g++ under linux. 回答1: The function clocks returns the processor time consumed by the program. While sleeping, your process does not use any amount of

问题 I have the following code: clock_t tt = clock(); sleep(10); tt = clock()-tt; cout<<(float)tt/CLOCKS_PER_SEC<<" "<<CLOCKS_PER_SEC<<endl; When I run the code, it apparently pauses for 10 seconds and the output is: 0.001074 1000000 This indicates it passed 1074 clock ticks and 1ms, which is apparently false. Why does this happen? I am using g++ under linux. 回答1: The function clocks returns the processor time consumed by the program. While sleeping, your process does not use any amount of

问题 Is there some difference between Time.now and Time.new (without parameters)? May be difference in memory management or some small details? 回答1: now is an alias for new. There's no difference between them. Jeff price's get to answer(and his answer is also correct, please up vote his answer if you like this) first, because I was writing and running this benchmark: Ruby 2.1.2 (MRI): Rehearsal ---------------------------------------------------------------------------- Time.new 0.670000 0.000000

问题 How to change the time in the iPhone simulator ? I want the other apps on my phone to see a different time than the current one. 回答1: Change your system time on the host Mac. The Simulator runs a separate userspace but shares the kernel so it doesn't have a notion of a different time from the host. 回答2: Old question, modern answer: With Xcode 11, Apple shipped new features for the simctl tool, which allows you to have a bit more control over what the simulators look like by overriding status

问题 My friends and I are developing an app in android studio using Kotlin. We are quite new in app development but we have decent prior programming skills. For one of our functionalities we need to get current date and time. We tried all kinds of imports and methods, but none seem to work with SDK lower than 26. With our app we target devices with minimum API 19. For example: package hr.com.wap.wap import android.support.v7.app.AppCompatActivity import android.os.Bundle import kotlinx.android

问题 My friends and I are developing an app in android studio using Kotlin. We are quite new in app development but we have decent prior programming skills. For one of our functionalities we need to get current date and time. We tried all kinds of imports and methods, but none seem to work with SDK lower than 26. With our app we target devices with minimum API 19. For example: package hr.com.wap.wap import android.support.v7.app.AppCompatActivity import android.os.Bundle import kotlinx.android