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How to validate an email address in JavaScript

...b"@gmail.com, _@gmail.com, 1@gmail.com , 1_example@something.gmail.com are all valid, but Gmail will never allow any of these email addresses. You should do this by accepting the email address and sending an email message to that email address, with a code/link the user must visit to confirm validit...
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Are static class variables possible in Python?

... if it's a subclass. A static method lacks this information, so it cannot call an overridden method, for example. – Seb Oct 2 '12 at 15:58 ...
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How do I print a list of “Build Settings” in Xcode project?

... 4.1 ACTION build AD_HOC_CODE_SIGNING_ALLOWED NO ALTERNATE_GROUP staff ALTERNATE_MODE u+w,go-w,a+rX ALTERNATE_OWNER username ALWAYS_SEARCH_USER_PATHS YES...
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What is __main__.py?

... 32 __main__.py is used for python programs in zip files. The __main__.py file will be executed whe...
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Get IP address of visitors using Flask for Python

...emote_addr) When proxies, such as nginx, forward addresses, they typically include the original IP somewhere in the request headers. Update See the flask-security implementation. Again, review the documentation about ProxyFix before implementing. Your solution may vary based on your particular...
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How exactly does __attribute__((constructor)) work?

... It runs when a shared library is loaded, typically during program startup. That's how all GCC attributes are; presumably to distinguish them from function calls. GCC-specific syntax. Yes, this works in C and C++. No, the function does not need to be static. The destructo...
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How do you debug PHP scripts? [closed]

...r_dump and print at various points to see where your flow goes wrong. When all else fails though and all I have is SSH and vim I still var_dump()/die() to find where the code goes south. share ...
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Locking a file in Python

...terminate in such a way that the lock is left in place and you have to manually delete the lock before the file becomes accessible again. However, that aside, this is still a good solution. – leetNightshade Nov 8 '12 at 21:27 ...
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What does the exclamation mark mean in a Haskell declaration?

... It's a strictness declaration. Basically, it means that it must be evaluated to what's called "weak head normal form" when the data structure value is created. Let's look at an example, so that we can see just what this means: data Foo = Foo Int Int !Int !(May...
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Cherry pick using TortoiseGit

... Open "Show log", then I activated "All branches" and then I got visible all branches (with their commit history) and then the possibility to cherry pick got active as well (as noted before, I got a commit which wasn't present in the current branch). ...