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Pure virtual destructor in C++
...ing from A and then try to delete or destroy it, A's destructor will eventually be called. Since it is pure and doesn't have an implementation, undefined behavior will ensue. On one popular platform, that will invoke the purecall handler and crash.
Edit: fixing the declaration to be more conformant...
Django import error - no module named django.conf.urls.defaults
...ement here. Just was adding to the answer. So that someone else could find all help at one place.
– Akshay Hazari
Aug 3 '17 at 8:47
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How do I create a Python function with optional arguments?
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Try calling it like: obj.some_function( '1', 2, '3', g="foo", h="bar" ). After the required positional arguments, you can specify specific optional arguments by name.
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Iterating Through a Dictionary in Swift
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If you want to iterate over all the values:
dict.values.forEach { value in
// print(value)
}
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Getting number of days in a month
I have a comboBox with all of the months in it.
7 Answers
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'str' object does not support item assignment in Python
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@aix: That was literally within a few seconds of each other. :D
– Joel Cornett
May 17 '12 at 7:31
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How can you sort an array without mutating the original array?
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this is really great.i think easier to understand than the concat and other approaches
– sktguha
Aug 31 at 20:02
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What does the `forall` keyword in Haskell/GHC do?
I'm beginning to understand how the forall keyword is used in so-called "existential types" like this:
8 Answers
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CSS file not opening in Visual Studio 2010 SP1?
...and found that by going to the Tools -> Extension Manager -> Online Gallery and search for/install the "Web Standards Update for Microsoft Visual Studio 2010 sp1" I was able to open CSS files again.
And it worked for me.
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How do I empty an array in JavaScript?
...n't have references to the original array A anywhere else because this actually creates a brand new (empty) array. You should be careful with this method because if you have referenced this array from another variable or property, the original array will remain unchanged. Only use this if you only r...