Chef likes all arrays equally. But he likes some arrays more equally than others. In particular, he loves Rainbow Arrays. An array is Rainbow if it has the following structure: First a1 elements equal 1. Next a2 elements equal 2. Next a3 elements equal 3. Next a4 elements equal 4. Next a5 e...

I have a function that accepts a range as an input. It works fine when I supply the function with a range like a1:a5, but not when I use an entire column like a:a. I could always loop over the whole column (ie. a:a) but that is so slow. Here is a simple example. Function r_sum(r1 As Range) As ...

I am using query builder method i have to combine these two arrays and call in foreach loop for blade table $students = DB::table('donators') ->select('*') ->leftjoin('payments', 'payments.id','=' ,'donators.id' ) ->get(); $amount= DB::table('payment...

Im trying to think of the most efficient way to structure an in memory leader board with the ability to read a specific rank quickly. Im talking about very micro optimisations as either way it will still be fast. class Leaderboard { constructor() { this.leaderboard = []; } ...

i wrote simple logger class, which i want to use for debugging my embedded projects. The logger uses uart to send messages to PC. I am not so experienced, so i count on your tips and comments about how to improve the quality of this code. In uart driver i used queue for store the messages. But i...

i want to make a method called isSorted which takes an array of integers and returns an integer value as follows: 0 if the array is not sorted 1 if it is sorted in ascending order -1 if it is sorted in descending order. public static int isSorted(int[] a) { int max = a[0]; int m...

Note: Moved from StackOverflow based on suggestion. I'm working on a method to rotate System.Enum values that have the [System.Flag] attribute set. I've tried to think of cases where there is no work to do (set to enumVar.ALL or enumVar.NONE where no rotation can occur, or when a request is mad...

This code extract data from generic mailbox mapped by MS Outlook I failed at recursive iteration in subfolders, so it stays as iterative one. Added ASCII encoding to deal with crazy national symbols in body/subjects. My main target is to ensure scalablity and prevent it being slow (iteration over...

I wanted to understand how base64 encoding (and decoding) works so I implemented this tool in the spirit of "classic UNIX tools" (read from stdin, write to stdout). I'd like to get general feedback on style and implementation (hoping I got it right). Also, since I'm doing bit manipulation, shoul...

it's my first time working with threads and I had this Homework to solve: Homework Text: Program a class called Animal. Animals have a spatial position that represented by an x ​​and a y coordinate (of type int). In addition, each animal must have an int-instance variable that represents the ...

I'm learning Rust and a few questions did arise during translation of my C++ code to Rust. There are comments in Rust code I'd like to be answered. Is there an idiomatic way to solve this task? The task was in simulating a random process - there are two chairs, which have different processing cap...

I am using react-flow-chart for a job project but it doesn't implement zoom and I would like to take the reigns and try implementing it myself. I tool linear algebra class in college but I am not very good at transformations. I feel like I could make my job a lot easier if I directly use CSS tran...

I am 14 years old and I have just created an encryption program with a friend. I wanted to know if anyone here could give me back any feedback on it. Here is how the program works, Imagine you want to encrypt the word 'hi', Depending on the key that can be generated with the program, the compu...

I'm currently learning about Entity-Component-System architecture Data-Driven design as a way to counter bad OOP design and optimize data fetching as a CPU friendly operation. I'm trying to write a simple ECS system that tries to follows these principals: CPU friendly by storing entities/compo...

I'm working on a site where you can read about different songs, listen to them, rate them etc, same with their singer. I've been thinking about how I could create a simple, yet perfectly working pagination script using PHP, and yesterday at night I came up with the code which you will see below. ...

So currently I'm feeding in a text file which has settings of a sort that I'm saving to a class structure. I have it working although sometimes 1/2 fail to capture out of 30 or so. I was curious if anyone knew a different way I could regex a value out of a string and store it to a class. Here is ...

vstrsepf is string parsing utility function born from the idea of using strsep and strtol with a sscanf-like interface. This is an attempt to build a safer scanf for embedded system application. Some key design choices: Will destroy its input string (by adding '\0'). No dynamic memory alloca...

I am trying to implement an in memory file system and wanted to model the commands Currently i want to support mkdir, cd, up, dir. mkdir and cd takes the directory name as argument while up and dir do not take any arguments. I am thinking to implement the commands as command pattern and started w...

Look at this series: 7, 6, 8, 4, 9, 2, 10, 0, 11, -2,... Create a function that receives two integers: x and y. If any of them are 0 or negative, or if they are greater than 255, the function should return -1 Otherwise, the function should return the sum of the x and y elements of the series....

So this is my first time posting here and one of my first projects in general. I’d like to start by apologising for the mess that is my code. I know that it’s really hard to parse, inefficient, and probably not idiomatic. I just don’t know how to fix it which is why I’m here. The whole thing is ...

I wrote a (very) simply Python3 password manager to familiarize myself with Sqlite3, and for fun. I am aware that there are already a variety of password managers out there, but I wanted something simple and secure(?) to replace the very insecure bashrc function that I use to generate random pass...

So I have a function like this: def logp(X,m,S): # Find the number of dimensions from the data vector d = X.shape[1] # Invert the covariance matrix Sinv = np.linalg.inv(S) # Compute the quadratic terms for all data points Q = -0.5*(np.dot(X-m,Sinv)*(X-m)).sum(axis=1) # Raise them quadratic te...

This is a lightweight version of std::shared_ptr<T> called res_ptr<T> This post is a continuation of: A lightweight version of std::shared_ptr<T> Revisited the code due to review from @TobySpeight and @MartinYork. Fixed errors and implemented full support for all types of data. std::shared_ptr<T>