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Facebook database design?
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Keep a friend table that holds the UserID and then the UserID of the friend (we will call it FriendID). Both columns would be foreign keys back to the Users table.
Somewhat useful example:
Table Name: User
Columns:
UserID PK
EmailAddress
Password
Ge...
How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
How to use bootstrap-theme.css with bootstrap 3?
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Upon downloading Bootstrap 3.x, you'll get bootstrap.css and bootstrap-theme.css (not to mention the minified versions of these files that are also present).
bootstrap.css
bootstrap.css is completely styled and ready to use, if such is your desire. It is perhaps a bit plain but i...
What are the best PHP input sanitizing functions?
...ta a bit safer. That's fine. Your mistake is in the order of operations, and how and where to use these functions.
It's important to understand the difference between sanitizing and validating user data, escaping data for storage, and escaping data for presentation.
Sanitizing and Validating User ...
Using @property versus getters and setters
... prevent you from actually getting or setting that attribute. Therefore, standard attribute access is the normal, Pythonic way of, well, accessing attributes.
The advantage of properties is that they are syntactically identical to attribute access, so you can change from one to another without any ...
Payment Processors - What do I need to know if I want to accept credit cards on my website? [closed]
This question talks about different payment processors and what they cost, but I'm looking for the answer to what do I need to do if I want to accept credit card payments?
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Is there a way to escape a CDATA end token in xml?
...only the CDEnd string is recognized as markup, so that left angle brackets and ampersands may occur in their literal form; they need not (and cannot) be escaped using "<" and "&". CDATA sections cannot nest.
In other words, it's not possible to use entity reference, markup or any oth...
Difference between is and as keyword
Please tell what is the difference between is and as keyword in C#
14 Answers
14
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Java: notify() vs. notifyAll() all over again
If one Googles for "difference between notify() and notifyAll() " then a lot of explanations will pop up (leaving apart the javadoc paragraphs). It all boils down to the number of waiting threads being waken up: one in notify() and all in notifyAll() .
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Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P
..., but then one of the server admins "updated" our Java to an older version and uninstalled the one we were using. Don't ask me why, I don't know. I re-installed Java 1.7 and uninstalled 1.6 along with the JREs.
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