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how can you easily check if access is denied for a file in .NET?
...een when you check the file and when you try to open it. A change is even more likely if you're in an area where you know you need to check first. Yet strangely enough it will never happen in your testing or development environments, which tend to be fairly static. This makes the problem difficul...
What's the difference between .so, .la and .a library files?
...rary (lots of threads can share such libraries so there is no need to have more than one copy of it in memory). But what is the difference between .a and .la ? Are these all static libraries?
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How to convert a string into double and vice versa?
...ouble + (myDouble>0 ? 0.5 : -0.5))
I'm honestly not sure if there's a more streamlined way to convert back into a string than
NSString* myNewString = [NSString stringWithFormat:@"%d", myInt];
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Entity Framework: How to disable lazy loading for specific query?
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Much more useful answer. This controls the specific sub-ordinate tables that are loaded at the point where the query is being constructed. For any real world problem this has to be the way to go.
– Richard Pe...
Hide Utility Class Constructor : Utility classes should not have a public or default constructor
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C/C++ Struct vs Class
...n structs and classes in C#, but that's simply irrelevant to C++, and even more so to C. In C#, classes and structs are actually different; not so in C++, and C only has structs without OO.
– Antal Spector-Zabusky
Dec 21 '15 at 6:08
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How do you install an APK file in the Android emulator?
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Explain “claims-based authentication” to a 5-year-old
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Java Reflection Performance
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Yes - absolutely. Looking up a class via reflection is, by magnitude, more expensive.
Quoting Java's documentation on reflection:
Because reflection involves types that are dynamically resolved, certain Java virtual machine optimizations can not be performed. Consequently, reflective opera...
django models selecting single field
...name', flat=True)
That creates a flat list of all eng_names. If you want more than one field per row, you can't do a flat list: this will create a list of tuples:
Employees.objects.values_list('eng_name', 'rank')
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