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How can prepared statements protect from SQL injection attacks?

... The idea is very simple - the query and the data are sent to the database server separately. That's all. The root of the SQL injection problem is in the mixing of the code and the data. In fact, our SQL query is a legitimate program. And we are creating s...
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Xcode: What is a target and scheme in plain language?

... it :-) What do they mean in plain English language? I really don't understand the explanation on Apple's website and I need to rename my target and I'm afraid that nothing works after that.. ...
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Equivalent of LIMIT and OFFSET for SQL Server?

In PostgreSQL there is the Limit and Offset keywords which will allow very easy pagination of result sets. 16 Answers ...
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In Python, when to use a Dictionary, List or Set?

... A list keeps order, dict and set don't: when you care about order, therefore, you must use list (if your choice of containers is limited to these three, of course;-). dict associates with each key a value, while list and set just contain values: ver...
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map vs. hash_map in C++

I have a question with hash_map and map in C++. I understand that map is in STL, but hash_map is not a standard. What's the difference between the two? ...
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What is the basic difference between the Factory and Abstract Factory Design Patterns? [closed]

What is the basic difference between the Factory and Abstract Factory Patterns? 19 Answers ...
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Which encoding opens CSV files correctly with Excel on both Mac and Windows?

...s CSV files containing foreign characters with UTF-8, no BOM. Both Windows and Mac users get garbage characters in Excel. I tried converting to UTF-8 with BOM; Excel/Win is fine with it, Excel/Mac shows gibberish. I'm using Excel 2003/Win, Excel 2011/Mac. Here's all the encodings I tried: ...
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What is the difference between declarative and imperative programming? [closed]

I have been searching the web looking for a definition for declarative and imperative programming that would shed some light for me. However, the language used at some of the resources that I have found is daunting - for instance at Wikipedia . Does anyone have a real-world example that they could ...
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Why doesn't Dijkstra's algorithm work for negative weight edges?

... Recall that in Dijkstra's algorithm, once a vertex is marked as "closed" (and out of the open set) - the algorithm found the shortest path to it, and will never have to develop this node again - it assumes the path developed to this path is the shortest. But with negative weights - it might not be...
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Difference between modes a, a+, w, w+, and r+ in built-in open function?

...tion, what is the exact difference between the modes w , a , w+ , a+ , and r+ ? 6 Answers ...