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Scala list concatenation, ::: vs ++
...an ad-hoc manner. When 2.8 came out, the collections were redesigned for maximum code reuse and consistent API, so that you can use ++ to concatenate any two collections -- and even iterators. List, however, got to keep its original operators, aside from one or two which got deprecated.
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Integer division with remainder in JavaScript?
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For some number y and some divisor x compute the quotient (quotient) and remainder (remainder) as:
var quotient = Math.floor(y/x);
var remainder = y % x;
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Changing the color of the axis, ticks and labels for a plot in matplotlib
I'd like to Change the color of the axis, as well as ticks and value-labels for a plot I did using matplotlib an PyQt.
3 An...
How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?
...cify which path you want to take.
Wikipedia has another good rundown and example here
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How to increase font size in a plot in R?
I am confused. What is the right way to increase font size of text in the title, labels and other places of a plot?
7 Answ...
What is “point free” style (in Functional Programming)?
...mbinators and function composition [...] instead of variables.
Haskell example:
Conventional (you specify the arguments explicitly):
sum (x:xs) = x + (sum xs)
sum [] = 0
Point-free (sum doesn't have any explicit arguments - it's just a fold with + starting with 0):
sum = foldr (+) 0
Or ev...
Which @NotNull Java annotation should I use?
...tion and/or static code analysis (FindBugs and Sonar) to avoid NullPointerExceptions. Many of the tools seem incompatible with each others' @NotNull / @NonNull / @Nonnull annotation and listing all of them in my code would be terrible to read. Any suggestions of which one is the 'best'? Here is...
Remove all elements contained in another array
... method:
myArray = myArray.filter( function( el ) {
return toRemove.indexOf( el ) < 0;
} );
Small improvement, as browser support for Array.includes() has increased:
myArray = myArray.filter( function( el ) {
return !toRemove.includes( el );
} );
Next adaptation using arrow function...
What is the difference between a var and val definition in Scala?
...a var can. However, said object can have its internal state modified. For example:
class A(n: Int) {
var value = n
}
class B(n: Int) {
val value = new A(n)
}
object Test {
def main(args: Array[String]) {
val x = new B(5)
x = new B(6) // Doesn't work, because I can't replace the obje...
Syntax error on print with Python 3 [duplicate]
Why do I receive a syntax error when printing a string in Python 3?
3 Answers
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