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mongodb count num of distinct values per field/key
... Richie said is that if the grouping is done just "regular" field (string, int etc.) then you don't need the unwind step. Isn't it correct?
– guyarad
Oct 19 '17 at 10:00
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Moving average or running mean
... another answer as there were so many but you might just copy and paste it into your IDE.
– Chaoste
Jan 28 '19 at 12:56
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Why java classes do not inherit annotations from implemented interfaces?
I've been using Guice's AOP to intercept some method calls. My class implements an interface and I would like to annotate the interface methods so Guice could select the right methods. Even if the annotation type is annotated with Inherited annotation implementing class doesn't inherit the annotat...
support FragmentPagerAdapter holds reference to old fragments
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You are running into a problem because you are instantiating and keeping references to your fragments outside of PagerAdapter.getItem, and are trying to use those references independently of the ViewPager. As Seraph says, you do have guarant...
Best way in asp.net to force https for an entire site?
... which includes details on why only using redirects can reduce security. Hint: it can leave you vulnerable to the SSL Strip tool, among other things. troyhunt.com/2011/11/…
– Oran Dennison
May 3 '13 at 20:00
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Why aren't Java Collections remove methods generic?
... type of the collection as parameter type.
The example given by him is an intersection of a List of Numbers and a
List of Longs.
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ExpressJS How to structure an application?
...pp that is too big to effectively work on. Get fancy for BIG wins, not for converting 3 simple lines to 1 complex line.
Use lower-kebab-case filenames
This format avoids filesystem case sensitivity issues across platforms
npm forbids uppercase in new package names, and this works well with that
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Show AlertDialog in any position of the screen
...der = new AlertDialog.Builder(this);
builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
if(item == 0) {
} else if(item == 1) {
} else if(item == 2) {
}
}
}...
Why is Scala's immutable Set not covariant in its type?
... is (Any) => Boolean, while the type of Set(1,2,3).contains _ is res1: (Int) => Boolean.
– Seth Tisue
Jun 27 '11 at 1:31
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Creating a zero-filled pandas data frame
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Note that you may run into int/float issue if you will be doing something like d.set_value(params) after initializing d to contain 0's. An easy fix is: d = pd.DataFrame(0.0, index=np.arange(len(data)), columns=feature_list).
–...