I've been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators)... At a core level, what does bit-shifting (<<, &gt...

In Haskell, we can write print $ abs $ 3 - 5 using $ . In F#, we can write printfn "%d" << abs <| 3 - 5 However, in many cases in F#, it would be also useful to have the same fun...

In JavaScript we can build a string with other types using reducer (e.g. num to string): const string = [1,2,3,4,5].reduce((acc,e) => acc += e, "") //"12345" In Java, this p...

I wonder if it's possible to store lambdas in some container, for ex. ArrayList or HashMap. I want to change that code: public enum OPCODE implements BinaryOperator<Integer> { MOV((x, y) -&...

Motivation I am trying to create my first real deal program in Rust for a school project (not a requirement..I just have been fascinated by Rust and decided that I'm going to take the plunge). The ...

I'm trying to replace the common switch for arithmetical operations by BinaryOperator functional interface. The base method is: private static int computeOne(int res, String operand, String ope...

Given a matrix of n rows and m columns of 1's and 0's, it is required to find out the number of pairs of rows that can be selected so that their OR is 11111....m times. Example: 1 0 1 0 1 0 1 0 ...

As I was using bit-shifting on byte, I notice I was getting weird results when using unsigned right shift (>>>). With int, both right shift (signed:>> and unsigned:>>>) beha...

So, I'm learning Haskell at the moment, and I would like to confirm or debunk my understanding of monoid. What I figured out from reading CIS194 course is that monoid is basically "API" for defi...

The Rust Reference presently says the following about the as operator: 7.2.12.5 Type cast expressions A type cast expression is denoted with the binary operator as. Executing an as express...

I am confused with a question that I saw in a c++ test. The code is here: #include <iostream> using namespace std; class Int { public: int v; Int(int a) { v = a; } Int &operator[](i...

I have by pure chance discovered that the C# compiler turns this method: static bool IsNotNull(object obj) { return obj != null; } …into this CIL: .method private hidebysig static bool IsNotNu...

I'm trying to refactor part of a pathfinding algorithm I had that used pointers to not use pointers. Unfortunately I'm not that knowledgable about references. I get the error: Invalid operands to b...

Okay, so after going through the tutorials on numpy's structured arrays I am able to create some simple examples: from numpy import array, ones names=['scalar', '1d-array', '2d-array'] formats=['f...

I am currently reading the O'Reilly Java 8 Lambdas, it is a really good book. I came across with a example like this. I have a private final BiFunction<StringBuilder,String,StringBuilder>accu...

I can see why $a = new ArrayObject(); $a['ID'] = 42; $b = &$a['ID']; $c = $a; $c['ID'] = 37; echo $a['ID']."\n"; echo $b."\n"; echo $c['ID']."\n"; outputs 37, 42, 37 while $a = new ArrayOb...

I am creating a parse tree that will contain expressions similar to 3 - 4 * 8 or 8 * -5 or -(10 * 1) I need a way to distinguish between the unary and binary minus. The way my grammar is g...

I recently came across some functions where you can pass multiple enums like this: myFunction(One | Two); Since I think this is a really elegant way I tried to implement something like that myse...

Could someone explain to me why the mask is not shifted to the right at all? You can use anything in place of that 1 and the result will be the same. unsigned mask = ~0 >> 1; printf("%u\n", ...