datetime

Is DateTime.Now the best way to measure a function’s performance? [closed]

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No, it’s not. Use the Stopwatch (in System.Diagnostics) Stopwatch sw = Stopwatch.StartNew(); PerformWork(); sw.Stop(); Console.WriteLine(“Time taken: {0}ms”, sw.Elapsed.TotalMilliseconds); Stopwatch automatically checks for the existence of high-precision timers. It is worth mentioning that DateTime.Now often is quite a bit slower than DateTime.UtcNow due to the work that has to be done with timezones, DST and such. … Read more

How to convert java.util.Date to java.sql.Date?

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Nevermind…. public class MainClass { public static void main(String[] args) { java.util.Date utilDate = new java.util.Date(); java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime()); System.out.println(“utilDate:” + utilDate); System.out.println(“sqlDate:” + sqlDate); } } explains it. The link is http://www.java2s.com/Tutorial/Java/0040__Data-Type/ConvertfromajavautilDateObjecttoajavasqlDateObject.htm

Moment js date time comparison

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I believe you are looking for the query functions, isBefore, isSame, and isAfter. But it’s a bit difficult to tell exactly what you’re attempting. Perhaps you are just looking to get the difference between the input time and the current time? If so, consider the difference function, diff. For example: moment().diff(date_time, ‘minutes’) A few other … Read more

What is the significance of 1/1/1753 in SQL Server?

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The decision to use 1st January 1753 (1753-01-01) as the minimum date value for a datetime in SQL Server goes back to its Sybase origins. The significance of the date itself though can be attributed to this man. Philip Stanhope, 4th Earl of Chesterfield. Who steered the Calendar (New Style) Act 1750 through the British … Read more

How do I find the time difference between two datetime objects in python?

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>>> import datetime >>> first_time = datetime.datetime.now() >>> later_time = datetime.datetime.now() >>> difference = later_time – first_time datetime.timedelta(0, 8, 562000) >>> seconds_in_day = 24 * 60 * 60 >>> divmod(difference.days * seconds_in_day + difference.seconds, 60) (0, 8) # 0 minutes, 8 seconds Subtracting the later time from the first time difference = later_time – first_time … Read more

Find objects between two dates MongoDB

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Querying for a Date Range (Specific Month or Day) in the MongoDB Cookbook has a very good explanation on the matter, but below is something I tried out myself and it seems to work. items.save({ name: “example”, created_at: ISODate(“2010-04-30T00:00:00.000Z”) }) items.find({ created_at: { $gte: ISODate(“2010-04-29T00:00:00.000Z”), $lt: ISODate(“2010-05-01T00:00:00.000Z”) } }) => { “_id” : ObjectId(“4c0791e2b9ec877893f3363b”), “name” … Read more

Python datetime to string without microsecond component

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If you want to format a datetime object in a specific format that is different from the standard format, it’s best to explicitly specify that format: >>> import datetime >>> datetime.datetime.now().strftime(“%Y-%m-%d %H:%M:%S”) ‘2011-11-03 18:21:26’ See the documentation of datetime.strftime() for an explanation of the % directives. Starting from Python 3.6, the isoformat() method is flexible … Read more

Incrementing a date in JavaScript

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Three options for you: 1. Using just JavaScript’s Date object (no libraries): My previous answer for #1 was wrong (it added 24 hours, failing to account for transitions to and from daylight saving time; Clever Human pointed out that it would fail with November 7, 2010 in the Eastern timezone). Instead, Jigar’s answer is the … Read more

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