How to calculate the last day of the month?
Calendar.getInstance().getActualMaximum(Calendar.DAY_OF_MONTH); This returns actual maximum for current month. For example it is February of leap year now, so it returns 29 as int.
datetime
How do I parse an ISO 8601-formatted date and time?
isoparse function from python-dateutil The python-dateutil package has dateutil.parser.isoparse to parse not only RFC 3339 datetime strings like the one in the question, but also other ISO 8601 date and time strings that don’t comply with RFC 3339 (such as ones with no UTC offset, or ones that represent only a date). >>> import dateutil.parser … Read more
How to sort pandas dataframe by one column
Use sort_values to sort the df by a specific column’s values: In [18]: df.sort_values(‘2’) Out[18]: 0 1 2 4 85.6 January 1.0 3 95.5 February 2.0 7 104.8 March 3.0 0 354.7 April 4.0 8 283.5 May 5.0 6 238.7 June 6.0 5 152.0 July 7.0 1 55.4 August 8.0 11 212.7 September 9.0 10 … Read more
How do I get the current time in Python?
Use datetime: >>> import datetime >>> now = datetime.datetime.now() >>> now datetime.datetime(2009, 1, 6, 15, 8, 24, 78915) >>> print(now) 2009-01-06 15:08:24.789150 For just the clock time without the date: >>> now.time() datetime.time(15, 8, 24, 78915) >>> print(now.time()) 15:08:24.789150 To save typing, you can import the datetime object from the datetime module: >>> from datetime … Read more
Which date class should I use in Java 8?
Each one of the Date classes are for specific purposes: If you want to use your Date in an SQL/JDBC context, use the java.sql.Timestamp. java.util.Date is the old Java API, it is not thread safe, you can difficultly handle time zoning, and on the top of all, it is poorly designed: one simple uniformity is … Read more
DateTime.Now and Culture/Timezone specific
It sounds like you need to store a DateTimeOffset instead of a DateTime. You could just store the local DateTime to the user creating the value, but that means you can’t perform any ordering operations etc. You can’t just use DateTime.UtcNow, as that won’t store anything to indicate the local date/time of the user when … Read more
Using DateTime in a SqlParameter for Stored Procedure, format error
How are you setting up the SqlParameter? You should set the SqlDbType property to SqlDbType.DateTime and then pass the DateTime directly to the parameter (do NOT convert to a string, you are asking for a bunch of problems then). You should be able to get the value into the DB. If not, here is a … Read more