dayofweek

问题 This question already has answers here : Java Calendar always shows the same time (5 answers) Calendar.Month gives wrong output (3 answers) Closed 10 months ago . I want to get the day for the date. When i set the date in cal.set(year,month-1,day), Sets the values for the calendar fields YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY, and MINUTE . Previous values of other fields are retained. Thus, when I do cal.DAY_OF_WEEK, I will get the values which were existing already. But how does the cal.get

问题 I'm trying to find if a date is Monday. To do this I proceed this way : #define kDateAndHourUnitsComponents NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar]; // for test and debug purpose NSDateComponents* b = [calendar components:kDateAndHourUnitsComponents fromDate:retDate]; int a=[[calendar components:kDateAndHourUnitsComponents fromDate:theDate]

问题 I have come across a rather strange "bug". When getting a date for a week of a year using this method: let dates = NSMutableArray() let cal = NSCalendar.currentCalendar() cal.firstWeekday = 2 let formatter = NSDateFormatter() formatter.dateFormat = "ww YYYY" formatter.calendar = cal let date = formatter.dateFromString(week as String) println(date) The string week is 52 2014 , so the expected date would be Monday December 22th, but instead it returns Saturday December 20th, at 23:00. First of

问题 I need some help to be able to set the first day of week from Sunday to Monday (change SMTWTFS to MTWTFSS) in com.toedter.calendar.JDateChooser , I tried like this with no result, I'm using version 1.3.3 of JDateChooser: JDateChooser dateChooser = new JDateChooser(new Date()); dateChooser.getCalendar().setFirstDayOfWeek(Calendar.MONDAY); 回答1: Following the conventions of proper getter implementation, getCalendar() probably returns a copy of the calendar used. Therefore your call to

问题 setting the day field in a calendar using myCalender.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY); does is put set the day to the next Friday or the past Friday or maybe the closest? Also what if I don't set the year or any other field for the calendar, what are the default values? 回答1: Neither. Yet. It’s complicated. But don’t use Calendar , see below. From the documentation of the two-arg set method: Sets the given calendar field to the given value. The value is not interpreted by this method

问题 I would like to get the same day last year given any year. How can I best do this in R. For example, given Sunday 2010/01/03, I would like to obtain the Sunday of the same week the year before. # "Sunday" weekdays(as.Date("2010/01/03", format="%Y/%m/%d")) # "Saturday" weekdays(as.Date("2009/01/03", format="%Y/%m/%d")) 回答1: To find the same weekday one year ago, simply subtract 52 weeks or 364 days from the given date: d <- as.Date("2010-01-03") weekdays(d) #[1] "Sunday" d - 52L * 7L #[1]

问题 I have a ASP.NET AJAX Calender and a TextBox. I want the user should be able to select only Mondays from the calender as that is the business rule. I can achieve this by using regular ASP.NET calendar control using the DayRender event, however I wish to use the AJAX Calender control because of its better appearance, easy navigation and partial postback. How can I achieve this (selecting only Mondays) using ASP.NET AJAX calendar? 回答1: You could only workaround by alert the user if he tries to

问题 I have a dataframe with a double index (day, time) and would like to create new columns 'Monday', 'Tuesday', 'Wednesday' etc equal to one if the index day is in the correct day. My original dataframe: Visitor Date Time 2017-09-11 4:45 0 5:00 1 5:15 26 .... 2017-09-12 4:45 0 5:00 1 5:15 26 .... What I would like to have: Visitor Monday Tuesday Date Time 2017-09-11 4:45 0 1 0 5:00 1 1 0 5:15 26 1 0 .... 2017-09-12 4:45 0 0 1 5:00 1 0 1 5:15 26 0 1 .... Here is what I tried: df['Monday'] = (df

问题 This is probably a newbie question, but here goes. I have a method where a type DayOfWeek List that gets appended with various days of the week (Could be Wednesday & Saturday, Sunday, Monday, & Friday, etc). Given that list, I need to compare it to a Datetime parameter, find the Week Day the DateTime parameter is closest to in the DayOfWeek list, and add days to the DateTime parameter based on what Week Day it is in the list. For example, if the DateTime parameter being passed in is a Sunday,

问题 I need name of day in week but dependent o actual date and date to future. For example I need name of day today, then name of day tomorrow, name of date +2 days etc I make this code but not working good. So is there any better way how I can in android get name of day? public String getDay3Name() { Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); String[] days = new String[] { "SUNDAY","SUNDAY","SUNDAY", "MONDAY", "TUESDAY", "WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY