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How to sort a file, based on its numerical values for a field?
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How to know what the 'errno' means?
When calling execl(...) , I get an errno=2 . What does it mean? How can I know the meaning of this errno ?
15 Answers
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How do I pass a variable by reference?
The Python documentation seems unclear about whether parameters are passed by reference or value, and the following code produces the unchanged value 'Original'
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How to get a Fragment to remove itself, i.e. its equivalent of finish()?
I'm converting an app to use fragments using the compatibility library.
Now currently I have a number of activities (A B C D) which chain onto one another, D has a button 'OK' which when pressed calls finish which then bubbles up through onActivityResult() to additionally destroy C and B.
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Open a folder using Process.Start
I saw the other topic and I'm having another problem. The process is starting (saw at task manager) but the folder is not opening on my screen. What's wrong?
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How do you copy a record in a SQL table but swap out the unique id of the new row?
This question comes close to what I need, but my scenario is slightly different. The source table and destination table are the same and the primary key is a uniqueidentifier (guid). When I try this:
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What do Clustered and Non clustered index actually mean?
I have a limited exposure to DB and have only used DB as an application programmer. I want to know about Clustered and Non clustered indexes .
I googled and what I found was :
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When should you not use virtual destructors?
Is there ever a good reason to not declare a virtual destructor for a class? When should you specifically avoid writing one?
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How does the Comma Operator work
How does the comma operator work in C++?
9 Answers
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
It seems that many projects slowly come upon a need to do matrix math, and fall into the trap of first building some vector classes and slowly adding in functionality until they get caught building a half-assed custom linear algebra library, and depending on it.
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