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Why don't structs support inheritance?
I know that structs in .NET do not support inheritance, but its not exactly clear why they are limited in this way.
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What is the GAC in .NET?
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Right, so basically it's a way to keep DLLs globally accessible without worrying about conflicts. No more DLL Hell. Each architecture and version gets it's own place to live.
It also gets it own way to browse it in Explorer, so if you go to
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Postgres: INSERT if does not exist already
I'm using Python to write to a postgres database:
17 Answers
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How to prevent the activity from loading twice on pressing the button
I am trying to prevent the activity from loading twice if I press the button twice instantly after the first click.
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Performance of Arrays vs. Lists
Say you need to have a list/array of integers which you need iterate frequently, and I mean extremely often. The reasons may vary, but say it's in the heart of the inner most loop of a high volume processing.
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What does Serializable mean?
What exactly does it mean for a class to be Serializable in Java? Or in general, for that matter...
10 Answers
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Test for multiple cases in a switch, like an OR (||)
How would you use a switch case when you need to test for a or b in the same case?
6 Answers
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How to determine whether a given Linux is 32 bit or 64 bit?
When I type uname -a , it gives the following output.
21 Answers
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When is “i += x” different from “i = i + x” in Python?
...This depends entirely on the object i.
+= calls the __iadd__ method (if it exists -- falling back on __add__ if it doesn't exist) whereas + calls the __add__ method1 or the __radd__ method in a few cases2.
From an API perspective, __iadd__ is supposed to be used for modifying mutable objects i...
Conveniently Declaring Compile-Time Strings in C++
...rings during compile-time in C++ has several useful applications. Although it is possible to create compile-time strings in C++, the process is very cumbersome, as the string needs to be declared as a variadic sequence of characters, e.g.
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