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What is the reason behind cbegin/cend?
...o modify the parameter it gets. Sure, SomeFunctor could take its parameter by value or by const&, but there's no way to ensure that it does. Not without doing something silly like this:
const std::vector<int> &vec_ref = vec;
std::for_each(vec_ref.begin(), vec_ref.end(), SomeFunctor())...
Should I instantiate instance variables on declaration or in the constructor?
...the instance variable initialization is actually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constructor(s) by the compiler:
{
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OpenJDK availability for Windows OS [closed]
... I'm downvoting this. Nothing personal, but an OpenJDK build built by someone on the internet cannot easily be trusted. Who is this ojdkbuild entity anyway? How do I know I'm not distributing malware?
– Lukas Eder
Sep 12 '18 at 14:22
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Why is “origin/HEAD” shown when running “git branch -r”?
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@robinst is correct.
In git, you can select which branch is checked out by default (i.e. when you clone). By default, origin/HEAD will point at that.
On GitHub, You can change this in the Admin settings for your GitHub repo. You can also do it from the command-line via
git remote set-head origi...
Split a List into smaller lists of N size
...ays that .Count is an O(1) operation, so I doubt you'd see any improvement by storing it in a variable: docs.microsoft.com/en-us/dotnet/api/…
– user1666620
Sep 15 at 13:54
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Accept server's self-signed ssl certificate in Java client
...Option #1 or, even better, have the server use a "real" certificate signed by a well known CA.
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Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
...y.join
Straight string concatenation
Then I created the same three tests by abstracting them into StringBuilderConcat, StringBuilderArrayPush and StringBuilderArrayIndex http://jsperf.com/string-concat-without-sringbuilder/5 Please go there and run tests so we can get a nice sample. Note that I fi...
The difference between fork(), vfork(), exec() and clone()
...ry, so it was pretty expensive. since in many cases a fork() was followed by exec(), which discards the current memory map and creates a new one, it was a needless expense. Nowadays, fork() doesn't copy the memory; it's simply set as "copy on write", so fork()+exec() is just as efficient as vfork(...
How to resize an image with OpenCV2.0 and Python2.6
... need to use the resize function.
For example, this will resize both axes by half:
small = cv2.resize(image, (0,0), fx=0.5, fy=0.5)
and this will resize the image to have 100 cols (width) and 50 rows (height):
resized_image = cv2.resize(image, (100, 50))
Another option is to use scipy modul...
How to remove outliers from a dataset
...answer then, since answered your question. If you want to exclude outliers by using "outlier rule" q +/- (1.5 * H), hence run some analysis, then use this function. BTW, I did this from scratch, w/o Googling, so there's a chance that I've reenvented the wheel with this function of mine...
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