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What is the fastest way to get the value of π?
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The Monte Carlo method, as mentioned, applies some great concepts but it is, clearly, not the fastest, not by a long shot, not by any reasonable measure. Also, it all depends on what kind of accuracy you are looking for. The fastest π I know of is the one ...
Listing all permutations of a string/integer
...ame logic)
In human language:
In short:
The permutation of 1 element is one element.
The permutation of a set of elements is a list each of the elements, concatenated with every permutation of the other elements.
Example:
If the set just has one element -->
return it.
perm(a) -> a
If the s...
Join vs. sub-query
...QL user and have always preferred JOIN over sub-query. But nowadays everyone uses sub-query, and I hate it; I don't know why.
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How do you test private methods with NUnit?
...testing is not about the class, it's about the code. If I had a class with one public method, and ten private ones used to create the result of the public one, I have no way of ensuring each private method works in the intended way. I could try to create test cases on the public method that hit the ...
What are some better ways to avoid the do-while(0); hack in C++?
...ot allow local function defintions, you'll have to move that function (the one you're gonna return from) somewhere else, which reduces readability. It might end up with dozens of parameters, then, because having dozens of parameters is a bad thing, you'll decide to wrap them into struct, which will ...
How to change language settings in R
...this two commands from a command prompt:
cd \
dir Rconsole /s
The first one make the root as the current directory, the second one looks for the Rconsole file.
In the following screenshot you have that Rconsole file is in the folder C:\Program Files\R\R-3.4.1\etc.
You may have more than one loc...
Determine if two rectangles overlap each other?
....Y1)
Say you have Rect A, and Rect B.
Proof is by contradiction. Any one of four conditions guarantees that no overlap can exist:
Cond1. If A's left edge is to the right of the B's right edge,
- then A is Totally to right Of B
Cond2. If A's right edge is to the left of the B's left...
What is the difference between UTF-8 and ISO-8859-1?
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One thing to note that ASCII extends from 0 to 127 only. The MSB is always 0.
– Hritik
Jan 27 '18 at 12:03
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Merge two (or more) lists into one, in C# .NET
Is it possible to convert two or more lists into one single list, in .NET using C#?
13 Answers
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What is a 'Closure'?
I asked a question about Currying and closures were mentioned.
What is a closure? How does it relate to currying?
23 Answer...