date

问题 I have a chart of a daily trend over time. The year is not relevant here and I want to show only day and month. I know you can show year and month but that is not the case. I tried to create a new variable called "Day_Month": import datetime as dt df['Day'] = df['date'].dt.day df['Month'] = df['date'].dt.month df['Day_Month'] = df['Day'].astype(str) + "-" + but it's not possible to plot it as a string nor to convert it to date type. eventually, I would like my chart to look like this: 回答1:

问题 I have a chart of a daily trend over time. The year is not relevant here and I want to show only day and month. I know you can show year and month but that is not the case. I tried to create a new variable called "Day_Month": import datetime as dt df['Day'] = df['date'].dt.day df['Month'] = df['date'].dt.month df['Day_Month'] = df['Day'].astype(str) + "-" + but it's not possible to plot it as a string nor to convert it to date type. eventually, I would like my chart to look like this: 回答1:

问题 This question already has answers here : Converting a string to a date in JavaScript (34 answers) Why does Date.parse give incorrect results? (11 answers) Closed 3 years ago . I am facing this issue with javascript, I get yyyy-mm-dd dates from a database, but when I want to get the number of the week with getDay(), I get a wrong number if the day is with leading zero I wrote a posible solution to parse MySql date into Javascript Date function parseDate(str){ var dt=str.replace(/[-T:]/g," ")

问题 I have a WPF datagrid with a binding to a class object that looks like the following: <DataGridTextColumn Header="Order Date" Binding="{Binding OrderDate }" /> The property in the class is quite simple, as follows: public DateTime OrderDate { get; set; } When I'm populating this property I'm just sending DateTime.Date (date only, not time): .Select( r => new Customer { Persona = r.Persona, CustomerName = r.CustomerName, Email = r.Email, Organization = r.Organization, PhoneNumber = r

问题 I'm currently programming an appointment finder that automatically syncs with MS Exchange Server. The program should lookup multiple users' calendar when they are available. I have coded some demo data with multiple users and their appointments. The appointments consist of two DateTimes. So my question is: How can I find a gap between multiple users appointments, where everyone is available. This is the demo data: var appointment1ForPerson1 = new Appointment(1, new List<Appointment.Time>() {

问题 I am trying to read a MySQL db record using this simple code in Google Apps Script: function testConn(){ // make the connection var connection = Jdbc.getConnection("jdbc:mysql://" + DB.URL + ":" + DB.PORT + "/" + DB.DATABASE, DB.USERNAME, DB.PASSWORD); // perform the query var SQLstatement = connection.createStatement(); var result = SQLstatement.executeQuery("SELECT date_available FROM oc_product where model = 'B23-U57-U57'"); var colNum = result.getMetaData().getColumnCount(); while(result

问题 I am trying to read a MySQL db record using this simple code in Google Apps Script: function testConn(){ // make the connection var connection = Jdbc.getConnection("jdbc:mysql://" + DB.URL + ":" + DB.PORT + "/" + DB.DATABASE, DB.USERNAME, DB.PASSWORD); // perform the query var SQLstatement = connection.createStatement(); var result = SQLstatement.executeQuery("SELECT date_available FROM oc_product where model = 'B23-U57-U57'"); var colNum = result.getMetaData().getColumnCount(); while(result

问题 I want to convert a date string to unix timestamp from a date string e.g. 14-02-2018 Can someone help? 回答1: Since JDK 8 you can do: val l = LocalDate.parse("14-02-2018", DateTimeFormatter.ofPattern("dd-MM-yyyy")) val unix = l.atStartOfDay(ZoneId.systemDefault()).toInstant().epochSecond Note that the example uses your system's default timezone. 回答2: use this to convert the date string to UNIX timestamp val date = SimpleDateFormat("dd-MM-yyyy").parse("14-02-2018") println(date.time) 来源： https:/

问题 I want to convert a date string to unix timestamp from a date string e.g. 14-02-2018 Can someone help? 回答1: Since JDK 8 you can do: val l = LocalDate.parse("14-02-2018", DateTimeFormatter.ofPattern("dd-MM-yyyy")) val unix = l.atStartOfDay(ZoneId.systemDefault()).toInstant().epochSecond Note that the example uses your system's default timezone. 回答2: use this to convert the date string to UNIX timestamp val date = SimpleDateFormat("dd-MM-yyyy").parse("14-02-2018") println(date.time) 来源： https:/

问题 I am trying to get previous 12 month into an arraylist, from the given month(taken from DB). List<String> allDates = new ArrayList<String>(); sqlQuery="select max(date) from Table_Name"; maxDate="Jan-2016"; (Result from Query); To get previous 12 months from maxDate,where i use SimpleDateFormat. I want to calculate the previous 12 months from Given Month (maxDate), not from current month, i tried the following code. // Parsing maxDate to an integer (say Jan-2016 = 0, Feb-2016= 1) Date date =