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How can I quantify difference between two images?
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General idea
Option 1: Load both images as arrays (scipy.misc.imread) and calculate an element-wise (pixel-by-pixel) difference. Calculate the norm of the difference.
Option 2: Load both images. Calculate some feature vector for each of them (like a histogram). Calculate distance between...
Method Resolution Order (MRO) in new-style classes?
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# H
# The resolution order can now be determined by reading from top to bottom, left to right. A B C E D F G H
x = A()
x.m()
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How to “warm-up” Entity Framework? When does it get “cold”?
...ou can do some of the initialization asynchronously (but beware of multi-threading issues). You can use scheduled tasks that call dummy pages in your application during times when there are no requests to prevent the AppDomain from dying, but it will eventually.
I also assume when you change your c...
App.Config Transformation for projects which are not Web Projects in Visual Studio?
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@andrewb, I read that here; however, that was a year ago. After revisiting the thread, and reading the comments, looks like someone has provided a version that works with VS2015 here.
– Anil Natha
F...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... don't supported the GPU module of OpenCV. Have you built OpenCV for iOS already? Were you able to test it? I think these are the questions you need to answer before trying anything more advanced. Baby steps!
– karlphillip
Jan 25 '12 at 12:40
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Combining C++ and C - how does #ifdef __cplusplus work?
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extern "C" doesn't really change the way that the compiler reads the code. If your code is in a .c file, it will be compiled as C, if it is in a .cpp file, it will be compiled as C++ (unless you do something strange to your configuration).
What extern "C" does is affect linkage. C...
How do I daemonize an arbitrary script in unix?
.../dev/null 2>&1
if [[ $? = 0 ]]; then
echo "Command $1 already running."
exit
fi
fi
# Write our pid to file.
echo $$ >$PIDFILE
# Get command.
COMMAND=$1
shift
# Run command until we're killed.
while true; do
$COMMAND "$@"
sleep 10 # if command dies immedia...
What is Domain Driven Design?
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So I take from this "read this book" answer that it is impossible to summarise DDD in simply a few paragraphs? How can a design philosophy be so complicated?
– Robin Winslow
Jan 16 '14 at 11:33
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How to get JSON response from http.Get
I'm trying read JSON data from web, but that code returns empty result. I'm not sure what I'm doing wrong here.
4 Answers
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Why use a ReentrantLock if one can use synchronized(this)?
...lso has support for configurable fairness policy, allowing more flexible thread scheduling.
The constructor for this class accepts an optional fairness parameter. When set true, under contention, locks favor granting access to the longest-waiting thread. Otherwise this lock does not guarantee any p...