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How to get indices of a sorted array in Python
... you can get the sorted list and indicies by using zip: sorted_items, sorted_inds = zip(*sorted([(i,e) for i,e in enumerate(my_list)], key=itemgetter(1)))
– Charles L.
Nov 30 '15 at 2:58
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Intercept page exit event
...ser might decide to navigate to another website and in doing so could lose all the edits they have not saved.
4 Answers
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How to check if a service is running on Android?
...equires starting the service and I think the best flexible solution should allow you to check whether a service is running without starting it.
– Tom
Apr 4 '12 at 16:23
18
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What is the function __construct used for?
I have been noticing __construct a lot with classes. I did a little reading and surfing the web, but I couldn't find an explanation I could understand. I am just beginning with OOP.
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How do I test for an empty JavaScript object?
...do you post answer including jQuery if the question is not about jQuery at all?
– Eru
Oct 1 '12 at 14:10
48
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Mongodb Explain for Aggregation framework
...ther manipulation will be in-memory (possibly using temporary files if the allowDiskUse option is set).
Optimizing pipelines
In general, you can optimize aggregation pipelines by:
Starting a pipeline with a $match stage to restrict processing to relevant documents.
Ensuring the initial $match / ...
What is an ORM, how does it work, and how should I use one? [closed]
... case with a pseudo language:
You have a book class, you want to retrieve all the books of which the author is "Linus". Manually, you would do something like that:
book_list = new List();
sql = "SELECT book FROM library WHERE author = 'Linus'";
data = query(sql); // I over simplify ...
while (row ...
Using the “final” modifier whenever applicable in Java [closed]
...ce of declaring every variable (local or class), parameter final if they really are.
25 Answers
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GPL and LGPL open source licensing restrictions [closed]
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LGPL allows you to use and distribute the open source software with your application without releasing the source code for your application.
GPL requires you to release the source code of your application if you choose to use and...
Toggle button using two image on different state
...android:background="@null" and android:drawableRight="@drawable/check". Usually I've found toggle buttons are right-justified. If you need it left-justified, use android:drawableLeft
– Patrick
Jun 1 '15 at 10:39
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