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add column to mysql table if it does not exist

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Typedef function pointer?

... { return u*v; } t_somefunc afunc = &product; ... int x2 = (*afunc)(123, 456); // call product() to calculate 123*456 share | improve this answer | follow ...
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What is a C++ delegate?

... 177 You have an incredible number of choices to achieve delegates in C++. Here are the ones that c...
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If I have ACCESS_FINE_LOCATION already, can I omit ACCESS_COARSE_LOCATION?

... 149 https://developer.android.com/guide/topics/location/strategies.html#Permission Note: If yo...
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Alter MySQL table to add comments on columns

... 136 try: ALTER TABLE `user` CHANGE `id` `id` INT( 11 ) COMMENT 'id of user' ...
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Run a Python script from another Python script, passing in arguments [duplicate]

... Try using os.system: os.system("script2.py 1") execfile is different because it is designed to run a sequence of Python statements in the current execution context. That's why sys.argv didn't change for you. ...
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ORA-01882: timezone region not found

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How do I enumerate through a JObject?

... 168 If you look at the documentation for JObject, you will see that it implements IEnumerable<K...
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Is there a way to check if a file is in use?

I'm writing a program in C# that needs to repeatedly access 1 image file. Most of the time it works, but if my computer's running fast, it will try to access the file before it's been saved back to the filesystem and throw an error: "File in use by another process" . ...
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How to use relative/absolute paths in css URLs?

... 127 The URL is relative to the location of the CSS file, so this should work for you: url('../../...