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Delete an element from a dictionary
... del/assignment/etc. means you're going from constant time to linear time, and also using linear space. For small dicts, this is not a problem. But if you're planning to make lots of copies of large dicts, you probably want a different data structure, like a HAMT (as described in this answer).
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What is the difference between IEqualityComparer and IEquatable?
I want to understand the scenarios where IEqualityComparer<T> and IEquatable<T> should be used.
The MSDN documentation for both looks very similar.
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Django Rest Framework - Could not resolve URL for hyperlinked relationship using view name “user-det
...n login to view their wine cellar.
My ModelViewSets were working just fine and all of a sudden I get this frustrating error:
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Mongoose populate after save
...is: http://mongoosejs.com/docs/api.html#model_Model.populate In the save handler for book, instead of:
book._creator = user;
you'd do something like:
Book.populate(book, {path:"_creator"}, function(err, book) { ... });
Probably too late an answer to help you, but I was stuck on this recently,...
What is __declspec and when do I need to use it?
... seen instances of __declspec in the code that I am reading. What is it? And when would I need to use this construct?
6 A...
How to install the JDK on Ubuntu Linux
...repository:
sudo add-apt-repository ppa:openjdk-r/ppa # only Ubuntu 17.4 and earlier
sudo apt update
Optional: To search available distributions of openjdk, use the following command:
apt search openjdk
Install the appropriate version with the following command:
sudo apt install openjdk-8-jdk
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Exclude folders from Eclipse search
Is there a way to exclude certain folders (and all their subfolders) from searching within Eclipse?
6 Answers
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Deleting a resource using http DELETE
... (even if the resource never existed). The client wanted the resource gone and it is gone. Returning a 404 is exposing internal processing that is unimportant to the client and will result in an unnecessary error condition.
– Brian
Feb 16 '14 at 7:07
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Python function global variables?
... value of the result of func_A, or (3) to a local variable x with no value and (in the eyes of the compiler) no relation to "some value" or the x in func_A?
– Akshat Shekhar
May 14 '12 at 18:00
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Generate random string/characters in JavaScript
I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9] .
77 Answers
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