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Assign null to a SqlParameter
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The problem is that the ?: operator cannot determine the return type because you are either returning an int value or a DBNull type value, which are not compatible.
You can of course cast the instance of AgeIndex to be type object which...
Is the NOLOCK (Sql Server hint) bad practice?
I'm in the business of making website and applications that are not mission critical -> eg. banking software, space flight, intensive care monitoring application, etc. You get the idea.
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Using arrays or std::vectors in C++, what's the performance gap?
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Using C++ arrays with new (that is, using dynamic arrays) should be avoided. There is the problem you have to keep track of the size, and you need to delete them manually and do all sort of housekeeping.
Using arrays on the stack is also discouraged becau...
.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
Assuming I have an ArrayList
9 Answers
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How can I get file extensions with JavaScript?
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Newer Edit: Lots of things have changed since this question was initially posted - there's a lot of really good information in wallacer's revised answer as well as VisioN's excellent breakdown
Edit: Just because this is the accepted answer; wallacer's answer is indeed m...
Meaning of “[: too many arguments” error from if [] (square brackets)
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If your $VARIABLE is a string containing spaces or other special characters, and single square brackets are used (which is a shortcut for the test command), then the string may be split out into multiple words. Each of these is treated as a se...
What are attributes in .NET?
...ts/methods/properties.
For example I might declare an Attribute called: DisplayOrder so I can easily control in what order properties should appear in the UI. I could then append it to a class and write some GUI components that extract the attributes and order the UI elements appropriately.
publi...
Can enums be subclassed to add new elements?
I want to take an existing enum and add more elements to it as follows:
15 Answers
15
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What's the difference between a mock & stub?
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Stub
I believe the biggest distinction is that a stub you have already written with predetermined behavior. So you would have a class that implements the dependency (abstract class or interface most likely) you are faking for testing purposes and the me...
Threading in a PyQt application: Use Qt threads or Python threads?
...pplication that regularly retrieves data through a web connection. Since this retrieval takes a while, this causes the UI to be unresponsive during the retrieval process (it cannot be split into smaller parts). This is why I'd like to outsource the web connection to a separate worker thread.
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