time

How to get current UK time in Google App Engine

由 此生再无相见时 提交于 2020-01-10 04:05:11
问题 Under python on my machine I can run datetime.now() to get the local time. If I inspect time.daylight flag it is set to 1 because we are currently in July (hence daylight saving). But if I run datetime.now() on Google App Engine (including the dev server) it doesn't account for daylight saving (british summer time) and returns the wrong time (13:47 instead of 14:47). If I inspect time.daylight in GAE it is set to 0 . How can I get the correct local time? Do I need to change the timezone on my

c time类型详解

由 元气小坏坏 提交于 2020-01-09 23:03:16
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> linux下存储时间常见的有两种存储方式，一个是从1970年01月01日 0:00:00到现在经过了多少秒，一个是用一个结构来分别存储年月日时分秒的。time_t 这种类型就是用来存储从1970年到现在经过了多少秒，要想更精确一点，可以用结构struct timeval，它精确到微妙。 struct timeval { long tv_sec; /*秒*/ long tv_usec; /*微秒*/ }; 而直接存储年月日的是一个结构： struct tm { int tm_sec; /*秒，正常范围0-59， 但允许至61*/ int tm_min; /*分钟，0-59*/ int tm_hour; /*小时， 0-23*/ int tm_mday; /*日，即一个月中的第几天，1-31*/ int tm_mon; /*月， 从一月算起，0-11*/ 1+p->tm_mon; int tm_year; /*年， 从1900至今已经多少年*/ 1900＋ p->tm_year; int tm_wday; /*星期，一周中的第几天， 从星期日算起，0-6*/ int tm_yday; /*从今年1月1日到目前的天数，范围0-365*/ int tm_isdst; /*日光节约时间的旗标*/ }; 需要特别注意的是

cmd line rename file with date and time

由 ∥☆過路亽．° 提交于 2020-01-09 18:22:05
问题 Project moving forwards, I can see why creating .bat files to do things can become addictive! I can now save somefile.txt at regular intervals, I then rename somefile.txt by adding the time and date to create a unique file name ren somefile.txt somefile_%time:~0,2%%time:~3,2%-%date:~-10,2%%date:~3,2%%date:~-4,4%.txt As an example, the code above has just renamed somefile.txt to somefile_1317_13022011.txt (1317hrs on 13th February 2011) I ran ren somefile.txt somefile_%time:~0,2%%time:~3,2%-

cmd line rename file with date and time

由 十年热恋 提交于 2020-01-09 18:21:14
问题 Project moving forwards, I can see why creating .bat files to do things can become addictive! I can now save somefile.txt at regular intervals, I then rename somefile.txt by adding the time and date to create a unique file name ren somefile.txt somefile_%time:~0,2%%time:~3,2%-%date:~-10,2%%date:~3,2%%date:~-4,4%.txt As an example, the code above has just renamed somefile.txt to somefile_1317_13022011.txt (1317hrs on 13th February 2011) I ran ren somefile.txt somefile_%time:~0,2%%time:~3,2%-

C++ Vector vs Array (Time)

由 我是研究僧i 提交于 2020-01-09 17:42:47
问题 I have got here two programs with me, both are doing exactly the same task. They are just setting an boolean array / vector to the value true. The program using vector takes 27 seconds to run whereas the program involving array with 5 times greater size takes less than 1 s. I would like to know the exact reason as to why there is such a major difference ? Are vectors really that inefficient ? Program using vectors #include <iostream> #include <vector> #include <ctime> using namespace std; int

C++ Vector vs Array (Time)

由 孤街醉人 提交于 2020-01-09 17:40:07
问题 I have got here two programs with me, both are doing exactly the same task. They are just setting an boolean array / vector to the value true. The program using vector takes 27 seconds to run whereas the program involving array with 5 times greater size takes less than 1 s. I would like to know the exact reason as to why there is such a major difference ? Are vectors really that inefficient ? Program using vectors #include <iostream> #include <vector> #include <ctime> using namespace std; int

Set time zone offset in Ruby

由 允我心安 提交于 2020-01-09 03:44:08
问题 The default time zone offset in Ruby is apparently -0800. I want to set mine to -0500. How do I do this? 回答1: Change the time zone on your OS; Ruby will pick up the change. 回答2: Set the TZ environment variable... $ ruby -e 'puts Time.now' Sat Jan 15 20:49:10 -0800 2011 $ TZ=UTC ruby -e 'puts Time.now' Sun Jan 16 04:49:20 +0000 2011 Ruby gets the time zone information from the host's operating system. Most directly, it uses a C library API specified by C99 and Posix. The implementation of that

Subtract time in PHP

由 假如想象 提交于 2020-01-09 02:30:05
问题 I have been looking for an answer for a few hours now, but I can't find one. I'm writing a simple script . The user sets their work start and end time. So, for example, somebody is working from 8:00 to 16:00. How can I subtract this time to see how long the person has been working? I was experimenting with strtotime(); but without success... 回答1: A bit nicer is the following: $a = new DateTime('08:00'); $b = new DateTime('16:00'); $interval = $a->diff($b); echo $interval->format("%H"); That

How to convert seconds to time format? [duplicate]

由 北慕城南 提交于 2020-01-09 01:59:09
问题 This question already has answers here : Convert seconds to Hour:Minute:Second (24 answers) Closed 6 years ago . For some reason I convert a time format like: 03:30 to seconds 3*3600 + 30*60, now . I wanna convert it back to its first (same) format up there. How could that be? My attempt: 3*3600 + 30*60 = 12600 12600 / 60 = 210 / 60 = 3.5, floor(3.5) = 3 = hour Now, what about the minutes? Considering the value can be like 19:00 or 02:51. I think you got the picture. And by the way, how to

Display a time clock in the R command line

由 守給你的承諾、 提交于 2020-01-08 13:55:11
问题 I wonder if there is a way to display the current time in the R command line, like in MS DOS, we can use Prompt $T $P$G to include the time clock in every prompt line. Something like options(prompt=paste(format(Sys.time(), "%H:%M:%S"),"> ")) will do it, but then it is fixed at the time it was set. I'm not sure how to make it update automatically. 回答1: Chase points the right way as options("prompt"=...) can be used for this. But his solutions adds a constant time expression which is not what
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