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Class method differences in Python: bound, unbound and static

What is the difference between the following class methods? 13 Answers 13 ...
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Does MySQL ignore null values on unique constraints?

I have an email column that I want to be unique. But I also want it to accept null values. Can my database have 2 null emails that way? ...
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JavaScript click event listener on class

I'm currently trying to write some JavaScript to get the attribute of the class that has been clicked. I know that to do this the correct way, I should use an event listener. My code is as follows: ...
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How does password salt help against a rainbow table attack?

I'm having some trouble understanding the purpose of a salt to a password. It's my understanding that the primary use is to hamper a rainbow table attack. However, the methods I've seen to implement this don't seem to really make the problem harder. ...
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DLL and LIB files - what and why?

I know very little about DLL's and LIB's other than that they contain vital code required for a program to run properly - libraries. But why do compilers generate them at all? Wouldn't it be easier to just include all the code in a single executable? And what's the difference between DLL's and LIB's...
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Generating a drop down list of timezones with PHP

...ed some way to show the dates on the site in the users preferred timezone. Below are two lists that I found and then one method using the built in PHP DateTime class in PHP 5. ...
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Is it possible to make relative link to image in a markdown file in a gist?

... As of now, relative image links are working for me, in both a repository and a wiki. I'm using syntax like this: ![Kiku](images/Kiku.jpg) Here's an example: https://github.com/mark-anders/relative-image-url ...
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How can I access the MySQL command line with XAMPP for Windows?

... Your MySQL binaries should be somewhere under your XAMPP folder. Look for a /bin folder, and you'll find the mysql.exe client around. Let's assume it is in c:\xampp\mysql\bin, then you should fireup a command prompt in this folder. Th...
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How do I add a submodule to a sub-directory?

I have a git repo in ~/.janus/ with a bunch of submodules in it. I want to add a submodule in ~/.janus/snipmate-snippets/snippets/ , but when I run git submodule add <git@github.com:...> in the snipmate-snippets directory, I get the following error message: ...
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moving changed files to another branch for check-in

...me code, go to check in my changes, and then realize I'm not in the proper branch to check in those changes. However I can't switch to another branch without my changes reverting. Is there a way to move changes to another branch to be checked in there? ...