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How to get a reference to current module's attributes in Python
...tion or method, this is the module
where it is defined, not the module
from which it is called).
http://docs.python.org/library/functions.html#globals
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Extracting text OpenCV
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You can detect text by finding close edge elements (inspired from a LPD):
#include "opencv2/opencv.hpp"
std::vector<cv::Rect> detectLetters(cv::Mat img)
{
std::vector<cv::Rect> boundRect;
cv::Mat img_gray, img_sobel, img_threshold, element;
cvtColor(img, img_g...
Is there a “null coalescing” operator in JavaScript?
...are considered NOT NULL and therefore count as actual values. If you come from a .net background, this will be the most natural feeling solution.
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Where is PATH_MAX defined in Linux?
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Beware: PATH_MAX is different from NAME_MAX (and the x-ref'd article in part seems to confuse these two, at least in part). Note: POSIX <limits.h> says: A definition of one of the symbolic constants in the following list shall be omitted from the &l...
C++ Tuple vs Struct
...on about tuple and struct and I write some simple benchmarks with the help from one of my colleague to identify the differences in term of performance between tuple and struct. We first start with a default struct and a tuple.
struct StructData {
int X;
int Y;
double Cost;
std::str...
remove all variables except functions
...side note, I'll be darned if I can figure the difference between those two from their documentation).
– Josh O'Brien
Nov 29 '11 at 17:04
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Is there any way to redraw tmux window when switching smaller monitor to bigger one?
...h with Terminal.app. When you "tmux attach" with bigger resolution monitor from smaller one you previously started tmux, it draws dots around the console. It doesn't fit the new window size. Is there any way to redraw and clean the window? CTRL + L or CTRL - B + R doesn't help. I couldn't find...
What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?
... is easy to write a bit-packing implementation for vectors -- here is one, from the (obsolete) uvector library. Under the hood, Repa uses Vectors, so I think it inherits that libraries representation choices.
Is there a predefined datatype that can help me here by packing multiple pixels into a wor...
Plot yerr/xerr as shaded region rather than error bars
...ave a higher resolution of your data), you can use pyplot.fill_between():
from matplotlib import pyplot as plt
import numpy as np
x = np.linspace(0, 30, 30)
y = np.sin(x/6*np.pi)
error = np.random.normal(0.1, 0.02, size=y.shape)
y += np.random.normal(0, 0.1, size=y.shape)
plt.plot(x, y, 'k-')
plt...
How to change a command line argument in Bash?
...ded to the two (hence the 2 in the notation) positional arguments starting from offset 1 (i.e. $1). It is a shorthand for "$1" "$2" in this case, but it is much more useful when you want to replace e.g. "${17}".
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