date

问题 I am getting exception while executing below code i am using java datetime APIs. String strDate = "12/4/2018 5:26:28 PM"; DateTimeFormatter formatter = DateTimeFormatter.ofPattern("MM/d/yyyy HH:mm:ss a", Locale.ENGLISH); LocalDateTime localDateTime = LocalDateTime.parse(strDate, formatter); below exception is coming Exception in thread "main" java.time.format.DateTimeParseException: Text '12/4/2018 5:26:28 PM' could not be parsed at index 10 at java.time.format.DateTimeFormatter

问题 I am trying to get the current date in UTC format. SO far I am able to do it but what I am stuck with is that it checks for the current 'System Date' and returns the result. I do not want that to happen because I need it specifically in UTC format and not by getting the system date. Also, the format I have output the result is the one I want with no changes in it. Any suggestions would be of great help. Here is my code: var now = new Date(); var currentDate; var date = (new Date(now) + '')

问题 I have a dataset as shown below Col1 Col2 Col3 CutoffDate 12001 Yes 2008-08-15 2008-08-10 12001 Yes 2008-08-22 2008-08-10 12001 Yes 2008-08-10 2008-08-10 12001 Yes 2008-08-04 2008-08-10 I am only interested in retaining the last two rows because they are less than or equal to the Cutoff Date 2008-08-10 . The final dataset should look like this Col1 Col2 Col3 CutoffDate 12001 Yes 2008-08-10 2008-08-10 12001 Yes 2008-08-04 2008-08-10 I know the subset function in R but not sure how to do this ,

问题 I'm having kind of a strange problem. When the server's Region and Language settings is set to English (United States) there are no issues with objects containing the date and time. But when I change it to my countries local Dutch (Belgium) I am experiencing problems in some of my PowerShell scripts. Is there somewhere a variable in PowerShell that needs to be set to fix this? Or do I have to default to English date formats on the server all the time? We use for example the SQL module

问题 I have a csv file with a column containing dates, but the dates are in two different formats: "m/d/y H:M" and "y m d H:M:S". I want to make a new column with these dates all in one format (I don't care which one). I tried the parse_date_time function but it would only work for one of the formats, not both. How can I go about doing this? Here is the code I was trying to use: newdata <- mutate(data, newcolumn = parse_date_time(x = data$date_column, orders = c("m/d/y H:M", "y m d H:M:S"), locale

问题 I have this piece of code: @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd") protected Date statusDate; But for somehow it accepts date formats like - "statusDate": "2017-13-27" or "statusDate": "201823-12-12" Is it possible to validate the format within the request (not manually)? 回答1: Well, you need to write a custom date serialisation/de-serialisation class and throw a custom exception if the date format you receive while intercepting the data is not what you'd expected.

问题 I have this piece of code: @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd") protected Date statusDate; But for somehow it accepts date formats like - "statusDate": "2017-13-27" or "statusDate": "201823-12-12" Is it possible to validate the format within the request (not manually)? 回答1: Well, you need to write a custom date serialisation/de-serialisation class and throw a custom exception if the date format you receive while intercepting the data is not what you'd expected.

问题 I have to allow my users to make an update with 24 hours of delay from their previous update, so because date operations in this case are going to be on the backend, but in the web server, i can store Javascript Date as a string in the database and when i have to calculate the difference between 2 dates i can query the lastUpdateDate from the database and parse it to a JS Date Object, is this safe to do? 回答1: Is it safe to store dates as a string in mysql? It is safe as long as the format

问题 I have to allow my users to make an update with 24 hours of delay from their previous update, so because date operations in this case are going to be on the backend, but in the web server, i can store Javascript Date as a string in the database and when i have to calculate the difference between 2 dates i can query the lastUpdateDate from the database and parse it to a JS Date Object, is this safe to do? 回答1: Is it safe to store dates as a string in mysql? It is safe as long as the format

问题 Right now I have a working bit of code that formats to my specification when my time series begin at the start of a decade (i.e. 1990, 2000, 2010,etc.), but I don't know how to adapt my code to have the correct formatting when my time series begins at a year that isn't even (i.e. 1993). import pandas as pd import matplotlib.pyplot as plt from matplotlib import dates def format_xaxis(fig): years = dates.YearLocator(10,month=1,day=1) years1=dates.YearLocator(2,month=1,day=1) dfmt = dates