milliseconds

问题 Seems like storing timestamps with millisecond precision is a know issue with hibernate. My field in the db was initially set as timestamp(3), but I've tried datetime(3) as well...unfortunately, it didn't make any difference. I've tried using Timestamp and Date classes, and recently I've started using joda-time library. After all those efforts, I still wasn't unable to save timestamps with millisecond accuracy. My mapping for the class contains following property: <property name="startTime"

问题 Well, you might think that this question has already been asked, but I think it has not. The solutions I've read about all had this "jigsaw puzzle" technique (like getUTCMonth() + getUTCMinutes + ... ). But as I only want to compare the elapsed seconds between two UTC (!) dates, this does not apply. As everybody knows, you can get the current (non-UTC) date by: var d = new Date(); var t_millis = d.getTime(); But this is NOT what I want. I'd like to have the current system date in UTC and in

问题 Say I have an algorithm in Java where I want to do something on a monthly basis based off the time associated with each object. So for example, if Object a has time long t , and t is in milliseconds since the epoch, how would I find out that t is a time in 03/2014? As a secondary question, how can I iterate over months backwards in time - so if I'm starting on May 1, 2014, how can I accurately go back to April, March, Feb, etc, without worrying about the whole problem of having 28 - 31 days

问题 Android documentation states about getElapsedCpuTime() that Returns elapsed milliseconds of the time this process has run. I tried using getElapsedCpuTime(), the time in milliseconds is quite confusing. After many (4 to 5) seconds, the elapsed time returned is just 2000 something. Either it is slower than original milliseconds (1000 in 1 sec) or I am having issue in proper understanding? I'm simply testing to get current cpu elapsed time on each button click, here's the code: public void

问题 I would like to trigger a function periodically, lets say, each 5s. The function will not consume many CPU time, so I expect that even if it is a blocking function it will not be a problem. I know that python will never be a real-time language, even if it run on a real-time os, I just want to avoid delays to significantly add up and desynchronize my data acquisition. I have compared two different ways to resolve it and I am a little surprised. Using threading module (solution found on SO),

问题 I need to convert 1774132 to 30:42 or 30 minutes and 42 seconds or whatever the output of this is. Is there any PHP function that does this? 回答1: I found this online a long time ago, but I have no idea where from anymore: <?php function secondsToWords($seconds) { /*** return value ***/ $ret = ""; /*** get the hours ***/ $hours = intval(intval($seconds) / 3600); if($hours > 0) { $ret .= "$hours hours "; } /*** get the minutes ***/ $minutes = bcmod((intval($seconds) / 60),60); if($hours > 0 ||

问题 I want to bind an input of type Date on the view to a milliseconds property in the model with Angularjs. For example : the user set "09/23/2014" into the field and angularjs automatically set "1411423200000" into the model property binding with the input. I don't find any directive or filter to do that. Thanks for your help. UPDATE to detail my question. Is there a "native" way in Angularjs to intercept model to view AND view to model and convert my data ? 回答1: You can use ng-change https:/

问题 I am trying to convert a date in MySQL to milliseconds . This is what I have to get the date: DATE_ADD(mydate, INTERVAL(1-DAYOFWEEK(mydate)) DAY) But that returns me like 15/02/2015 and I want to get the milliseconds of that date. 回答1: Use the UNIX_TIMESTAMP function. SELECT (UNIX_TIMESTAMP(mydate)*1000) FROM... UNIX_TIMESTAMP will get you seconds and you need to multiply by 1000 to get milliseconds. To convert back, use FROM_UNIXTIME() function. SELECT FROM_UNIXTIME(date_in_milliseconds/1000

问题 I've been venturing down the odyssey of trying to get fractional time resolution working properly in my database. I use the python method datetime.now() in order to create date objects. I then store these objects in a field which is mapped to a COLUMN(DATETIME(9)) which is from SqlAlchemy's library. Originally, I was getting an error that my data was being truncated. This is because I was using mysql 5.5. I have since updated to 5.6.19 and no longer get the data truncated error. However, the

问题 I am trying to convert milliseconds to a date using the javascript using: new Date(Milliseconds); constructor, but when I give it a milliseconds value of say 1372439683000 it returns invalid date. If I go to a site that converts milliseconds to date it returns the correct date. Any ideas why? 回答1: You're not using a number, you're using a string that looks like a number. According to MDN, when you pass a string into Date, it expects a format recognized by the parse method (IETF-compliant RFC