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src/lxml/etree_defs.h:9:31: fatal error: libxml/xmlversion.h: No such file or directory
... Notice for Ubuntu 13.04 users: if you have libxml2 already installed and upgraded to version 2.9.0+dfsg1-4ubuntu4.3 you need to downgrade it to 2.9.0+dfsg1-4ubuntu4.1 by typing the command sudo apt-get install libxml2=2.9.0+dfsg1-4ubuntu4.1 otherwise the libxml2-dev wont be installed due versi...
How does the SQL injection from the “Bobby Tables” XKCD comic work?
...LName.Text + "')";
This is the naive way to add text input into a query, and is very bad, as you will see.
After the values from the first name, middle name textbox FNMName.Text (which is Robert'); DROP TABLE STUDENTS; --) and the last name textbox LName.Text (let's call it Derper) are concatenat...
Why does one hot encoding improve machine learning performance?
...ced that when One Hot encoding is used on a particular data set (a matrix) and used as training data for learning algorithms, it gives significantly better results with respect to prediction accuracy, compared to using the original matrix itself as training data. How does this performance increase h...
How to edit log message already committed in Subversion?
... one) cause the
property's previous value to be
permanently discarded, and Subversion
tries to prevent you from doing this
accidentally. However, there are a
couple of ways to get Subversion to
change a revision property.
The first way is for the repository
administrator to enable...
What is the point of interfaces in PHP?
...le inheritance. The issues with inheriting from multiple classes are many and varied and the wikipedia page on it sums them up pretty well.
Interfaces are a compromise. Most of the problems with multiple inheritance don't apply to abstract base classes, so most modern languages these days disable...
Search in all files in a project in Sublime Text 3
...tabs.
The keyboard shortcut is Ctrl⇧+F on non-Mac (regular) keyboards,
and ⌘⇧+F on a Mac.
You'll be presented with three boxes: Find, Where and Replace. It's a regular Find/Find-replace search where Where specifies a file or directory to search. I for example often use a file name or . for...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
I see on Stack Overflow and PEP 8 that the recommendation is to use spaces only for indentation in Python programs. I can understand the need for consistent indentation and I have felt that pain.
...
Is the list of Python reserved words and builtins available in a library?
Is the list of Python reserved words and builtins available in a library? I want to do something like:
1 Answer
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How do you match only valid roman numerals with a regular expression?
...L|L?X{0,3})(IX|IV|V?I{0,3})$
Breaking it down, M{0,4} specifies the thousands section and basically restrains it to between 0 and 4000. It's a relatively simple:
0: <empty> matched by M{0}
1000: M matched by M{1}
2000: MM matched by M{2}
3000: MMM matched by M{3}
4000:...
Given a number, find the next higher number which has the exact same set of digits as the original n
I just bombed an interview and made pretty much zero progress on my interview question. Can anyone let me know how to do this? I tried searching online but couldn't find anything:
...