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Measuring execution time of a function in C++
... @MikeMB : Good point, making this a header would definitely be a bad idea. Though, in the end, it's just an example, if you have complex needs you gotta think about standard practices and adapt the code accordingly. For example, when writing code, I make it convenient for me when it's in the c...
Faye vs. Socket.IO (and Juggernaut)
...uld use Socket.IO. In practise, there are some barriers to this:
I've no idea what kind of server-side support Socket.IO requires, and the requirement that the Faye client (there are server-side clients in Node and Ruby, remember) be able to talk to any Bayeux server (and the Faye server to any Ba...
How do SQL EXISTS statements work?
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Thanks Vlad. That's what I thought. It's just a weird idea that occurred when I was messing around with it. I honestly didn't know the concept of correlated subquery. And now it makes a lot more sense to filter out rows of the outer query with the inner query.
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Add column with number of days between dates in DataFrame pandas
...days did not work and I had to use df['C'] = (df['B'] - df['A']).days. Any idea why mine did not give the number of days as expected?
– Samuel Nde
Sep 21 '18 at 18:44
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What are the most-used vim commands/keypresses?
...ed. Maybe it can be useful to you.
Grosso modo, I don't think it's a good idea to do a radical switch. Vim is very different and it's best to go progressively.
And to answer your subquestion, yes, I use all of iaIAoO everyday to enter insert mode. It certainly seems weird at first but you don't re...
What is ApplicationException for in .NET?
...ion is a class that should not be part of the .NET Framework. The original idea was that classes derived from SystemException would indicate exceptions thrown from the CLR (or system) itself, whereas non-CLR exceptions would be derived from ApplicationException. However, a lot of exception classes d...
Storing money in a decimal column - what precision and scale?
...level you do need and stick to it. Don't use float. Seriously. It's a bad idea.
– Marcus Downing
Oct 22 '08 at 22:46
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How to convert java.util.Date to java.sql.Date?
...which represents a moment on the timeline in UTC. An Instant is similar in idea to a java.util.Date. But note that Instant has a resolution up to nanoseconds while java.util.Date has only milliseconds resolution.
To convert, use new methods added to the old classes. For example, java.util.Date.from(...
Get/pick an image from Android's built-in Gallery app programmatically
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It doesn't work when I use Astro file manager. Any ideas why?
– Rohith Nandakumar
Dec 15 '10 at 4:19
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What is the meaning of the CascadeType.ALL for a @ManyToOne JPA association
...ERGE, DETACH) to the relating entities.
It seems in your case to be a bad idea, as removing an Address would lead to removing the related User. As a user can have multiple addresses, the other addresses would become orphans. However the inverse case (annotating the User) would make sense - if an ad...