datetime-format

问题 C# uses string like that 'dd MMMM yyyy HH:mm' to define format the date and time should be displayed in. Equivalent of that in momentjs is 'DD MMMM YYYY HH:mm' . Is there some function that can covert one format definition into the other regardless of what (legal) combination of format specifiers source format contains? Basically what I want is: function toMomentJsFormatDefinition(cSharpFormatDefinition) { // should convert all format strings described here https://msdn.microsoft.com/en-us

问题 What's the equivalent of microsec_clock for milliseconds in the following code? #include <boost/date_time/posix_time/posix_time.hpp> int main() { boost::posix_time::ptime date_time = boost::posix_time::microsec_clock::local_time(); const std::string str_time = boost::posix_time::to_simple_string(date_time); std::cout << str_time << std::endl; return 0; } output: 2015-Jan-25 16:26:14.932738 I need the following output: output: 2015-Jan-25 16:26:14.932 回答1: Indeed, this seems a strange omission

问题 What's the equivalent of microsec_clock for milliseconds in the following code? #include <boost/date_time/posix_time/posix_time.hpp> int main() { boost::posix_time::ptime date_time = boost::posix_time::microsec_clock::local_time(); const std::string str_time = boost::posix_time::to_simple_string(date_time); std::cout << str_time << std::endl; return 0; } output: 2015-Jan-25 16:26:14.932738 I need the following output: output: 2015-Jan-25 16:26:14.932 回答1: Indeed, this seems a strange omission

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How can I convert string to datetime with format specification in JavaScript? I have a json response which contains a hashmap like; {"map":{"2012-10-10 03:47:00.0":23.400000000000002,"2012-10-10 03:52:00.0":23.3,"2012-10-10 03:57:00.0":23.3,"2012-10-10 04:02:00.0":23.3,"2012-10-10 04:07:00.0":23.200000000000003,"2012-10-10 04:13:00.0":23.1,"2012-10-10 04:18:00.0":23.1,"2012-10-10 04:23:00.0":23.0,"2012-10-10 04

问题 I have an array of dates (in different time zones GMT) and I would like to calculate the hours that have elapsed between the first and the last date. For example, this would be an array of dates: [ 1 => 2016-06-05T08:45:00.000+02:00, 2 => 2016-06-05T09:55:00.000+02:00, 3 => 2016-06-05T12:10:00.000+02:00, 4 => 2016-06-05T14:25:00.000-04:00 ] I want to calculate the hours that have elapsed since the date with index 1 to 2, 2 to 3 and from 3 to 4. The problem is I do not know how to calculate

问题 I have EndDate column in my table which accepts records like this 2014-10-29 00:00:00.000 Now I want to compare this DateTime with present date . For that , I did like this :- var today=DateTime.Now; var LstEvents = (from t in _context.Tournaments where t.SiteId == siteId && t.EndDate != null && t.EndDate < today select t).ToList(); But t.EndDate < today is not returning results as I wanted . I did Add Watch for today and checked the value and it's format was like today {11/3/2014 8:12:00 PM}

问题 I have EndDate column in my table which accepts records like this 2014-10-29 00:00:00.000 Now I want to compare this DateTime with present date . For that , I did like this :- var today=DateTime.Now; var LstEvents = (from t in _context.Tournaments where t.SiteId == siteId && t.EndDate != null && t.EndDate < today select t).ToList(); But t.EndDate < today is not returning results as I wanted . I did Add Watch for today and checked the value and it's format was like today {11/3/2014 8:12:00 PM}

问题 I want to generate multiple maps over a base map (TMap). Basically, the same map, but categorized by week. Okay, here's the base code: library(ggplot2) library(ggmap) library(lubridate) map=TMap + geom_point(aes(x=Lon, y=Lat, size=count, color=as.Date(y$`2016-35`$DateTime)), data=y$`2016-35`, alpha=1) + scale_colour_gradient(limits=as.Date(c(min(y$`2016-35`$DateTime), max(y$`2016-35`$DateTime))),low="navy", high="orange", name="Date", trans="date") ggsave(map,path=dir,filename = paste("l",

问题 We want to get a correct dateformat from LOG files generated by different systems with different language and log mechanism. We thought this can be done be a SimpleDataFormat.parse and try-catch exception way. But the follow code shows a problem. String tryparseString = "18-01-22 00:03:34:071"; try { SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); System.out.println(sdf1.parse(tryparseString)); System.out.println(sdf1.format(sdf1.parse(tryparseString))); System.out

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 years ago . So Im stuck here on my project in VB.Net . I wanted to make a user defined date time function that is not dependent on the system time Ive tried to search on the net but they only gave me how to print current system time. Any idea guys how to make a customized date time updating every seconds in