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Quicksort vs heapsort
...rted (it is indexing multiple related fields that often either move up and down together OR move up and down opposite each other, so once you sort by one, the others are either sorted or reverse-sorted or close... either of which can kill QuickSort). For that case, I implemented neither... instead,...
What is the reason for having '//' in Python? [duplicate]
...---------------------
# divide
>>> 1.0 / 2
0.5
# divide and round down
>>> math.floor(1.0/2)
0.0
# divide and round down
>>> 1.0 // 2
0.0
# now let's examine `integer` returns
# -------------------------------------
>>> 1/2
0
>>> 1//2
0
...
New to unit testing, how to write great tests? [closed]
...idea that, when you make a code change, in the moment you may not consider down the line how that change impacts all of the prescribed uses of the code – the test defends against a change that does not satisfy all intended use cases.
– Greenstick
Dec 6 '19 at...
What is unit testing and how do you do it? [duplicate]
...g to evolve naturally into your code.
The most obvious benefit is knowing down the road that when a change is made, no other individual units of code were affected by it if they all pass the tests.
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How to design a product table for many kinds of product where each product has many parameters
...eUploader: {
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Database Design for Revisions?
...able with an IsCurrent discriminator attribute. This just causes problems down the line, requires surrogate keys and all sorts of other problems.
Design 2 does have problems with schema changes. If you change the Employees table you have to change the EmployeeHistories table and all the related sp...
Using Linq to get the last N elements of a collection?
...
.NET Core 2.0+ provides the LINQ method TakeLast():
https://docs.microsoft.com/en-us/dotnet/api/system.linq.enumerable.takelast
example:
Enumerable
.Range(1, 10)
.TakeLast(3) // <--- takes last 3 items
.ToList()
.ForEach(i => System.Console.WriteLine(i)...
How do I find Waldo with Mathematica?
...one within the specified distance can give good results.
This will narrow down the areas to process.
Storing these results will produce a set of areas that should have Waldo in it. Exclude all other areas (e.g., for each area, select a circle twice as big as the average person size), and then run...
RegEx match open tags except XHTML self-contained tags
... be parsed by regular expressions. Regex queries are not equipped to break down HTML into its meaningful parts. so many times but it is not getting to me. Even enhanced irregular regular expressions as used by Perl are not up to the task of parsing HTML. You will never make me crack. HTML is a langu...
Pros and cons to use Celery vs. RQ [closed]
... the (arguably more full-featured) Celery for RQ? In my mind, it all comes down to the simplicity. By restricting itself to Redis+Unix, RQ provides simpler documentation, simpler codebase, and a simpler API. This means you (and potential contributors to your project) can focus on the code you care a...