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How do I determine k when using k-means clustering?
...ering
n = 150
g = 6
set.seed(g)
d <- data.frame(x = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))),
y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
mydata<-d
#Plot 3X2 plots
attach(mtcars)
par(mfrow=c(3,2))
#Plot the original dataset
plot(mydata$x,m...
Compare JavaScript Array of Objects to Get Min / Max
... etc.) on an array of objects, and return a single result:
myArray.reduce(function(prev, curr) {
return prev.Cost < curr.Cost ? prev : curr;
});
...or you can define that inner function with ES6 function syntax:
(prev, curr) => prev.Cost < curr.Cost ? prev : curr
If you want to be...
Why is Dictionary preferred over Hashtable in C#?
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Fun. The Dictionary<T> source code looks a lot cleaner and faster. It might be better to use Dictionary and implement your own synchronization. If the Dictionary reads absolutely need to be current, then you'd simply ...
How to get a function name as a string?
In Python, how do I get a function name as a string, without calling the function?
12 Answers
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Emulate a do-while loop in Python?
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yes. and add more fun by renaming condition to do throughout so that the second line reads while do: :D
– SpeedCoder5
Aug 6 '18 at 17:38
...
Centering floating divs within another div
...rizontal */
and the floated children get aligned center (DEMO)
Just for fun, to get vertical alignment as well just add:
align-items: center; /* align vertical */
DEMO
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Ruby on Rails vs ASP.NET MVC 3 for a .NET Guy? [closed]
... language like Ruby isn't a bad place to start. (Another option would be a functional language like Haskell, Scala, etc.)
You will be a better programmer after you do, and you won't have to call yourself "a .NET guy" anymore!
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How can I change the color of my prompt in zsh (different from normal text)?
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not working for me. :( zsh: colors: function definition file not found
– balki
Sep 8 '11 at 4:20
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Selenium WebDriver: Wait for complex page with JavaScript to load
...with findElement() method is not an option.
I want to create a generic function in Java to wait for a page to load, a possible solution would be:
...
How can I deserialize JSON to a simple Dictionary in ASP.NET?
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@pilavdzice Not to mention the fun you have when trying to Parse dates as it assumes MS's non-standard date format.
– Basic
Jun 21 '12 at 14:21
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