I've been studying Java for some days and I'm just now starting to make some simple programs, I'd like to know if there's any 'noob' mistakes or habits that I could avoid.
In other words: how could my code be more streamlined to Java?
My code:
import java.util.Scanner;
public class Main
{
...
id like to know how to code in python something that sums all the possible combinations of numbers inside an array, for example with an input like this
arr = [1,2,3]
and get an output like this
1= 1
1+2 =3
1+3 =4
1+2+3 =6
2=2
2+1=3
2+3=5
2+3+1=6
and so on, showing all possible combinations
I am trying to implement a greedy zip method in Haskell where it does not drop the elements, instead, it will use some default value. I appreciate any feedback to make it more compact.
zip' [-1] [] r = r
zip' [] [-1] r = r
zip' [] b r = zip' [-1] b r
zip' a [] r = zip' a [-1] r
zip' a b r =...
I've just downloaded a script from PhpJabbers,
which Uses Php & Javascript to Display a Page coming soon
animated countdown. PhpJabbers - countdown Script:
Coming-soon.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-type" content...
Below is code for handling events in SFML. It works by reading a text file containing a sequence of functions to be called when a given event is detected:
EventManager.hpp
#pragma once
#include <SFML/Window.hpp>
#include <SFML/Graphics.hpp>
#include <vector>
#include <unordered_map>
#include <...
My solution to the Leetcode's Subtree of Another Tree passes all the test cases, but the code feels and looks ugly. Would appreciate an advice on how to improve it.
The problem:
Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node values with...
Is the code below safe to create unique ids for objects?
I will create new yoga classes and need to have a unique id for each class. I made this small piece of code to generate the id numbers.
Regarding specifically the uniqueIdCreatorHandler method, would this solution incur in bad performance...
Why am I fighting the compiler? - Wrote this, which works, but I feel like I'm breaking every rule in the book:
#[macro_use]
extern crate lazy_static;
use std::ffi::OsString;
use std::path::PathBuf;
use std::str::FromStr;
use actix_rt;
use actix_web::client::Client;
use async_std::fs::File;
u...
Given the models below:
class Structure(Model):
...
class StructureComponent(Model):
...
structure = ForeignKey(Structure)
parent_component = ForeignKey('self', null=True, ...)
Developer should synchronize with the database a list of trees:
The sample of request data:
{
...
I want to improve quality of this symfony rest endpoint (solid principle, Kiss, best practice...) Can you review my code please?
Symfony controllController function that return json list of product
/**
* @Route("/api/products/my_list/{number}", methods={"GET"})
* @param Security $security
* ...
I'm trying to learn Javascript and I've set up a bill calculator. Most of the lines in the code are to deal with rounding. It has four main components:
Allows you to enter the bill amount and tip percentage
calculates the total bill divided by the number of guests
Calculates the total tip
Split...
I have done a clustering algorithm and represented the results in a pie chart as shown below.
fig, ax = plt.subplots(figsize=(20, 10), subplot_kw=dict(aspect="equal"))
contents = []
for k,v in clusters.items():
indi= str(len(clusters[k])) + " users " + "Cluster_"+ str(k)
contents.ap...
So I'm writing a game emulator and would like some advice after finishing the networking. It is designed to accept multiple connections, and process packets from all of them.
Here is how each individual packet is structured:
[lengthOfString:short][stringEncodedInUtf8:Byte[]]
Okay, let's get d...
I just checked the How to Ask, What types of questions should I avoid asking? and What topics can I ask about here?, but I'm confused about the working code part.
Quoting from What topics can I ask about here?:
If you have a working piece of code from your project and are looking
for open-...
Below is an abstract base class which derives from the ObservableObject of the MvvmLight, implementing the INotifyDataErrorInfo interface.
The view binds directly to the model (exposed via the ViewModel), to avoid duplication of properties.
A couple of notes:
a) I chose the HashSet<string>> t...
Recently, I've received negative feedback of interview's test. They say that they need somebody with higher technical level, the quality of the task was not good enough.
I upload it here, to request your knowledge and teach me how to improve it to improve my development skills around Google Maps...
I'm looking to speed up an Rcpp function I have written.
The function takes in a string called vcfield, which takes the format od x:y:z. This string has 3 fields if you separate it by the :. It takes an int DSfield which tells us the index (0 based) field from vcfield which is the dosage. Dosag...
My name is Teresa Dietrich. About a month ago, I joined Stack Overflow as Head of Product and Community. During my years as an engineer and technology leader I saw the impact this community and site has on people across the world and I am very excited to be here. While I have personally gotten a ...
I have small (<250 bytes) chunk of binary data, where I know that almost always, the first nibble is going to be zero 0. For example, in hex:
01 02 03 04 0A 0B 0C 0D
I want to do some simple compression on this data. What I've decided to do is run length encoding, but I first need to get the...
This is a project I started a while ago, and still going. It is a text-based RPG written in Python. There are two files: asathryne.py (the main file) and stuff.py (a file with some functions for programs that I make; the game imports a couple of functions from it.) Thanks for looking over it!
as...
I wrote a program that is able to perform calculations with matrices:
main.cpp (Just for test purposes)
#include <iostream>
#include <vector>
#include "matrix.hpp"
int main() {
std::cout << "Width (matrix 1):\n";
int width = getDimension();
std::cout << "Height (matrix 1):\n";
...
I want to schedule a script such that next instance of script will not run if previous instance is still running. Currently I am using file based lock as below.
What is the correct pythonic way to achive the same ?
import os
import sys
import time
# Next Instance will check for lock and exit i...
For my programming class, at the start of the semester before we learned about object oriented coding, I was supposed to make a small program that searches through a bunch of files, being graded on useability.
from os import walk
from time import time
SEPARATORS = (" ", "-", "_", ":", "|", "~")...
It's a web application. It should provide a service for entering data. Data is then evaluated and uses itself another service.
It was part of an interview process where I was given that task to solve. The feedback was that it was not sufficient and I got rejected. But I don't know what exactly t...
I am trying to implement Deep Quaternion Networks. I was able to implement the batch normalization technique. But it requires a lot of GPU memory. Is there any way I can optimize the code provided below?
class MyQuaternionBatchNorm2d(torch.nn.Module):
def __init__(self, num_features, eps=1e...
I'm doing some code review and I saw something like the following:
std::ifstream dataFile(filename);
if (dataFile.is_open())
{
std::deque<std::string> lines;
std::string line, line_batch;
while (std::getline(dataFile, line))
{
if (!line.empty())
lines.push_bac...
