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Python, remove all non-alphabet chars from string
... data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
...
Calling Objective-C method from C++ member function?
...s a objective-C function [context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer]; which I cannot do in C++ syntax.
...
Copying files from one directory to another in Java
I want to copy files from one directory to another (subdirectory) using Java. I have a directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to c...
Are static class variables possible in Python?
...ev points out, this creates a class-level i variable, but this is distinct from any instance-level i variable, so you could have
>>> m = MyClass()
>>> m.i = 4
>>> MyClass.i, m.i
>>> (3, 4)
This is different from C++ and Java, but not so different from C#, where...
Most efficient way to create a zero filled JavaScript array?
...other way to do it using ES6 that nobody has mentioned so far:
> Array.from(Array(3), () => 0)
< [0, 0, 0]
It works by passing a map function as the second parameter of Array.from.
In the example above, the first parameter allocates an array of 3 positions filled with the value undefine...
How do you detect where two line segments intersect? [closed]
...uct v × w to be vx wy − vy wx.
Suppose the two line segments run from p to p + r and from q to q + s. Then any point on the first line is representable as p + t r (for a scalar parameter t) and any point on the second line as q + u s (for a scalar parameter u).
The two line...
How to print without newline or space?
...ue keyword argument:
print('.', end='', flush=True)
Python 2.6 and 2.7
From Python 2.6 you can either import the print function from Python 3 using the __future__ module:
from __future__ import print_function
which allows you to use the Python 3 solution above.
However, note that the flush k...
Parsing HTML using Python
...ontainer' contained within the body tag, Or something similar.
try:
from BeautifulSoup import BeautifulSoup
except ImportError:
from bs4 import BeautifulSoup
html = #the HTML code you've written above
parsed_html = BeautifulSoup(html)
print(parsed_html.body.find('div', attrs={'class':'con...
Maven dependency for Servlet 3.0 API?
...s. Is there a source that confirms this assumption?
The maven repository from Java.net indeed offers the following artifact for the WebProfile:
<repositories>
<repository>
<id>java.net2</id>
<name>Repository hosting the jee6 artifacts</name>
<u...
Can I use __init__.py to define global variables?
... subpackages and each with several modules. How can I access that variable from these modules?
4 Answers
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