time

问题 I created a function (mergesort) in ocaml but when I use it, the list is inverted. In addition, I want to calculate the time the system takes to do the calculation, how can I do it? let rec merge l x y = match (x,y) with | ([],_) -> y | (_,[]) -> x | (h1::t1, h2::t2) -> if l h1 h2 then h1::(merge l t1 y) else h2::(merge l x t2);; let rec split x y z = match x with | [] -> (y,z) | x::resto -> split resto z (x::y);; let rec mergesort l x = match x with | ([] | _::[]) -> x | _ -> let (pri,seg) =

问题 For ex: If we have in table records like: 25/06/2009 28/12/2009 19/02/2010 16/04/2011 20/05/2012 I want to split/select this dates according to 6 month intervals starting from current date. result should be like: 0-6 month from now: first record 7-12 month from now: second record ... It will be much apreciated if you make this simple as I made it very stupid and complicated like: declare variable like t1=curdate()+6 t2=curdate()+12 ... then selected records to fit between curdate() and t1,

问题 I need to change DST and time zone via API in my application. I modified & copied example of "SetTimeZoneInformation" usage by the end of the following link and have run it: http://msdn.microsoft.com/en-us/library/windows/desktop/ms724944(v=vs.85).aspx I am assuming that my time settings should reflect on my time settings in tray or control panel. But nothing happens. Following thing also should be noticed. This code modifies "HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation" key

问题 I need to change DST and time zone via API in my application. I modified & copied example of "SetTimeZoneInformation" usage by the end of the following link and have run it: http://msdn.microsoft.com/en-us/library/windows/desktop/ms724944(v=vs.85).aspx I am assuming that my time settings should reflect on my time settings in tray or control panel. But nothing happens. Following thing also should be noticed. This code modifies "HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation" key

问题 Does momentjs provide any option to set time with particular time ? var date = "2017-03-13"; var time = "18:00"; var timeAndDate = moment(date).startOf(time); console.log(timeAndDate); <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment.min.js"></script> 回答1: Moment.js does not provide a way to set the time of an existing moment through a string. Why not just concatenate the two: var date = "2017-03-13"; var time = "18:00"; var timeAndDate = moment(date + ' ' + time);

问题 Is there a way to generate time range in pandas similar to date_range? something like: pandas.time_range("11:00", "21:30", freq="30min") 回答1: A time range doesn't exist as a standalone index type. Generate using a single date In [1]: pandas.date_range("11:00", "21:30", freq="30min") Out[1]: <class 'pandas.tseries.index.DatetimeIndex'> [2013-07-14 11:00:00, ..., 2013-07-14 21:30:00] Length: 22, Freq: 30T, Timezone: None The time objects In [2]: pandas.date_range("11:00", "21:30", freq="30min")

问题 I have an extensive DATE-TIME conversion class, but i came across a scenario that i cannot resolve: I have a java.util.date: Tue May 10 00:00:00 BST 2011 I have a java.sql.time: 03:58:44 I need to create a java.util.date: Tue May 10 03:58:44 BST 2011 The only approach i came up with is: public static Date getDate(Date date, Time time) { Calendar calendar=Calendar.getInstance(); calendar.set(date.getYear(), date.getMonth(), date.getDay(), time.getHours(), time.getMinutes(), time.getSeconds());

问题 Let’s say for instance a user writes about an event to the Firebase database, what the user writes has a time stamp attached to it and other users are able to read what was written in a list view using the FirebaseListAdapter. Is there a way to make the data written by the user unreadable once the time on the time stamp has passed? 回答1: There's a big difference here between whether you have a single item, or a list of items. Securing access to a single node If you have a single node like this

问题 I'm currently adding an out of office like system to a website, where users will be able to mark their out of office dates and times such that they can provide another users's information to use as a backup while they are out. The problem I have, is converting the users's local time to UTC. I've seen other posts that address this issue by supplying UTC to the user, and having the client (js) convert the time to and from local time. I do, however, have access to a propriety system I can use to

问题 I'm currently adding an out of office like system to a website, where users will be able to mark their out of office dates and times such that they can provide another users's information to use as a backup while they are out. The problem I have, is converting the users's local time to UTC. I've seen other posts that address this issue by supplying UTC to the user, and having the client (js) convert the time to and from local time. I do, however, have access to a propriety system I can use to