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How to detect online/offline event cross-browser?

...k when the user follows links or when a script requests a remote page (or knows that such an attempt would fail), and must return true otherwise. Finally, the spec notes: This attribute is inherently unreliable. A computer can be connected to a network without having Internet access. ...
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Create code first, many to many, with additional fields in association table

...ing { get; set; } public string SomethingElse { get; set; } } If you now want to find all comments of members with LastName = "Smith" for example you can write a query like this: var commentsOfMembers = context.Members .Where(m => m.LastName == "Smith") .SelectMany(m => m.Member...
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Age from birthdate in python

...etime import dateutil def birthday(date): # Get the current date now = datetime.datetime.utcnow() now = now.date() # Get the difference between the current date and the birthday age = dateutil.relativedelta.relativedelta(now, date) age = age.years return age ...
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Get current date in milliseconds

...d it'll result in a negative value. For example, if I run that code right now, it'll result in currentTime = 1357234941 and currentTime /seconds / minutes / hours / days = years 1357234941 / 60 / 60 / 24 / 365 = 43.037637652207 ...
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Differences between Oracle JDK and OpenJDK

...arting with JDK 11 accessing the long time support Oracle JDK/Java SE will now require a commercial license. You should now pay attention to which JDK you're installing as Oracle JDK without subscription could stop working. source Ref: List of Java virtual machines ...
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Does Java have a using statement?

... "Luckily" with Java 7 being available now, this answer is no longer true (and I think that ARM blocks are exactly what using does). – Joachim Sauer Aug 24 '11 at 8:32 ...
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How to use UIScrollView in Storyboard

...ould like to be able to lay it out for easy design on the storyboard. I know it can be done programmatically but I really want to be able to see it visually. Every time I put a scroll view on a view controller it won't scroll. Is it possible to get it to work like I want or do I have to do it in t...
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How to do constructor chaining in C#

I know that this is supposedly a super simple question, but I've been struggling with the concept for some time now. 8 An...
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Verifying signed git commits?

... made available in the two years since the question was posted: There are now git commands for this task: git verify-commit and git verify-tag can be used to verify commits and tags, respectively. share | ...
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GetHashCode Guidelines in C#

...rate with hash tables" or similar. Like most things, GetHashCode is about knowing when to break the rules. share | improve this answer | follow | ...