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How does database indexing work? [closed]

...a section for data, a pointer to the location of the next node (or block), and both need not be stored contiguously. Due to the fact that a number of records can only be sorted on one field, we can state that searching on a field that isn’t sorted requires a Linear Search which requires N/2 block...
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accepting HTTPS connections with self-signed certificates

...te Authority (CA) like Verisign , GlobalSIgn , etc., listed on the set of Android Trusted Certificates, I keep getting javax.net.ssl.SSLException: Not trusted server certificate . ...
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Practical usage of setjmp and longjmp in C

Can anyone explain me where exactly setjmp() and longjmp() functions can be used practically in embedded programming? I know that these are for error handling. But I'd like to know some use cases. ...
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How do I terminate a thread in C++11?

...to terminate the thread correctly, or make it respond to a "terminate" command. I am interested in terminating the thread forcefully using pure C++11. ...
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If Python is interpreted, what are .pyc files?

I've been given to understand that Python is an interpreted language... However, when I look at my Python source code I see .pyc files, which Windows identifies as "Compiled Python Files". ...
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How does LMAX's disruptor pattern work?

I am trying to understand the disruptor pattern . I have watched the InfoQ video and tried to read their paper. I understand there is a ring buffer involved, that it is initialized as an extremely large array to take advantage of cache locality, eliminate allocation of new memory. ...
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What is the effect of extern “C” in C++?

...then link to using the C name. Since C++ has overloading of function names and C does not, the C++ compiler cannot just use the function name as a unique id to link to, so it mangles the name by adding information about the arguments. A C compiler does not need to mangle the name since you can not ...
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What are the best PHP input sanitizing functions?

...ta a bit safer. That's fine. Your mistake is in the order of operations, and how and where to use these functions. It's important to understand the difference between sanitizing and validating user data, escaping data for storage, and escaping data for presentation. Sanitizing and Validating User ...
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What is the difference between class and instance attributes?

... Only the mutable types are shared. Like for int and str they still attached with each instances rather than class. – Babu Jul 17 '14 at 11:59 11 ...
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Framework vs. Toolkit vs. Library [duplicate]

What is the difference between a Framework, a Toolkit and a Library? 12 Answers 12 ...