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How to crop an image in OpenCV using Python
...y slicing.
import cv2
img = cv2.imread("lenna.png")
crop_img = img[y:y+h, m>x m>:m>x m>+w]
cv2.imshow("cropped", crop_img)
cv2.waitKey(0)
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std::back_inserter for a std::set?
...td::inserter and pass it .begin():
std::set<int> s1, s2;
s1 = getAnEm>x m>citingSet();
transform(s1.begin(), s1.end(),
std::inserter(s2, s2.begin()), Em>x m>citingUnaryFunctor());
The insert iterator will then call s2.insert(s2.begin(), m>x m>) where m>x m> is the value passed to the iterator when w...
How to drop into REPL (Read, Eval, Print, Loop) from Python code
...ly force a Python script to drop into a REPL at an arbitrary point in its em>x m>ecution, even if the script was launched from the command line?
...
Why does modern Perl avoid UTF-8 by default?
...stdin, stdout, and stderr to UTF‑8. Both these are global effects, not lem>x m>ical ones.
At the top of your source file (program, module, library, dohickey), prominently assert that you are running perl version 5.12 or better via:
use v5.12; # minimal for unicode string feature
use v5.14; # optimal...
Detecting a redirect in ajam>x m> request?
I want to use jQuery to GET a URL and em>x m>plicitly check if it responded with a 302 redirect, but not follow the redirect.
...
Parallel.ForEach vs Task.Run and Task.WhenAll
...ed Task.Run(()=> Parallel.ForEach(....)); It stopped crashing. Can you em>x m>plain why? Please note i constrain the parallel options to the number of cores on system.
– monkeyjumps
Nov 6 '14 at 18:33
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Difference between object and class in Scala
... going over some Scala tutorials on the Internet and have noticed in some em>x m>amples an object is declared at the start of the em>x m>ample.
...
View list of all JavaScript variables in Google Chrome Console
...le you have to type the name of the public variable or object you want to em>x m>plore.
15 Answers
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string.ToLower() and string.ToLowerInvariant()
...oLower might produce a culture specific lowercase letter, that you aren't em>x m>pecting. Such as producing ınfo without the dot on the i instead of info and thus mucking up string comparisons. For that reason, ToLowerInvariant should be used on any non-language-specific data. When you might have use...
How to update the value stored in Dictionary in C#?
...ange the value. (?) At least, if it doesn't matter to overwrite keys, for em>x m>ample in a situation where it is not em>x m>cluded that keys are written more than once in a loop. Or does somebody see any disadvantages? Especially because .Add has the ptifall for beginners that if the if-wrapper or TryGetVal...