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What is the difference between quiet NaN and signaling NaN?
I have read about floating-point and I understand that NaN could result from operations. But I can't understand what these are concepts exactly. What is the difference between them?
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Convert a character digit to the corresponding integer in C
Is there a way to convert a character to an integer in C?
15 Answers
15
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Can I use a hash sign (#) for commenting in PHP?
I have never, ever, seen a PHP file using hashes ( # ) for commenting. But today I realized that I actually can! I'm assuming there's a reason why everybody uses // instead though, so here I am.
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Which annotation should I use: @IdClass or @EmbeddedId
...se because with @IdClass you cannot access the entire primary key object using any field access operator. Using the @EmbeddedId you can do like this:
@Embeddable class EmployeeId { name, dataOfBirth }
@Entity class Employee {
@EmbeddedId EmployeeId employeeId;
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}
This gives a clear notion ...
Why is Cache-Control attribute sent in request header (client to server)?
After reading about the Cache-Control field of the HTTP header,
3 Answers
3
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MySQL search and replace some text in a field
What MySQL query will do a text search and replace in one particular field in a table?
7 Answers
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How can I indent multiple lines in Xcode?
When I select multiple lines of code and want to indent them as usual with TAB key, it just deletes them all. I come from Eclipse where I always did it that way. How's that done in Xcode? I hope not line by line ;)
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Is assert evil? [closed]
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No, there's nothing wrong with assert as long as you use it as intended.
That is, it's supposed to be for catching cases that "can't happen", during debugging, as opposed to normal error handling.
Assert: A failure in the program's logic ...
What's the difference between using INDEX vs KEY in MySQL?
I know how to use INDEX as in the following code. And I know how to use foreign key and primary key .
5 Answers
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accepting HTTPS connections with self-signed certificates
I'm trying to make HTTPS connections, using HttpClient lib, but the problem is that, since the certificate isn't signed by a recognized Certificate Authority (CA) like Verisign , GlobalSIgn , etc., listed on the set of Android Trusted Certificates, I keep getting javax.net.ssl.SSLException: Not ...