Although there is a blinking LED, the way this comes about is quite a bit different. This could be called a dead man's switch because as long as your holding the button down, the blinking doesn't start until the button is released. It is connected as follows;
/*
Blink 2017-Mar-26 by Peter ...
I have recently coded my own authentication system and wondered if there was any way I could make it better? I coded it with Laravel 5.4. getView is called on Route::get and onPost is called on Route::post
use Auth;
use App\User;
use App\Http\Controllers\Controller;
use Validator;
use Redir...
I'm trying to make minesweeper similar to windows 3.1 minesweeper by using OpenGL / GLUT. The game still in early stage but playable. I would like to know, how can I improve it.
#include <cstdlib>
#include <gl/glut.h>
#include <ctime>
enum { MINE = 9 };
enum { TILE_SIZE = 20 };
enum { BOARD_SIZ...
I've been working on a CSV parser as of late, which you can find the source code for here. Recently I've decided to add an iterator to it, following along with the template here: Preparation for std::iterator being deprecated.
However, I've never written an iterator, and I feel like I'm not doin...
This answer on Stack Overflow includes an implementation for a Java BlockingQueue with unique elements:
/**
* Linked blocking queue with {@link #add(Object)} method, which adds only element, that is not already in the queue.
*/
public class SetBlockingQueue<T> extends LinkedBlockingQueue<T> {
...
Please help me to review my site [originvietnam.com][1]
[1]: https://originvietnam.com/halong-bay-cruises/ - is it good code for search engine? any recommendation? thanks
The task is: Given an array A of size N, find all combinations of four elements in the array whose sum is equal to a given value K.
The specific requirements are:
The combinations must be distinct
Each quadruple is separated by a delimiter "$", and must be printed in ascending order
Here ar...
Here are two very small blocks of code I wrote while trying to fix a bug in AngularJS. Both do the same thing. I'm trying to understand how the two differ, mainly in terms of the tradeoff between cpu and memory efficiency.
Here is version 1:
function findSearch(url) {
var index = url.indexOf(...
This is my solution to Google Code Jam 2008 round 1C problem B. I think it's very elegant. However, I wonder if it's too concise. What could I improve here?
Code:
from functools import lru_cache
M = 2*3*5*7
uglies = list(filter(lambda n: (int(n)%2 == 0 or
int(n)...
Im new to swift and this has me stumped... Im not understanding why my for loop is not adding the objects into the mutable array.
thanks for your help!
`class someClass: UITableViewController {
var items = NSMutableArray()
override func viewDidLoad() {
super.viewDidLoad()
SDK.sharedI...
I have a project and I got an advice to use promises to make actions called one after another when it needed (in my project I call 2 actions to add a new todo (1) and to clear text (2) in input above todo's list).
However I am not completely shure if I need the redux-thunk and don't understand ho...
I often make changes on my code-base and manually using sed, awk or perl -pi -e is not always as efficient as having a simple alias: git pie.
Furthermore, because I am working on Cygwin, I cannot do real in-place replacement without a temporary file that I have to manually suppress afterwards. ...
I made a simple calendar in PHP 7.0, could anyone help with simplification? Any advice appreciated. It works, but I totally believe it can be improved. I am a beginner.
<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
$chosen_year = filt...
I recently got an invite for the Google Foo bar Challenge, it was nice all the way when I started the Level 1 challenge, and now am in Level 2 (Stage 2) when I got stuck with the mysterious Test 5 case failure
Here is the challenge:
Numbers Station Coded Messages
When you went undercove...
I've been tasked with creating a workshop for new programmers. As part of this, I want to set them a few puzzles.
What I need is something simple/short(ish) for them to figure out - 'what does this code do'? This will probably be written in Pseudo Code.
The next step will be for them to refact...
If someone could help me resolve it(if it was bad), that would be good too :)
This is the problem:
Airport
Pretend we are operating a small airport with a single runway. We need to develop a data structure to help scheduling airplanes to take off and land from this runway. Each time a plane ...
How to reduce / beautify this code?
const getFirstCategory = (bonusPlus, prizeCategories) => {
if (bonusPlus) {
if (prizeCategories[0].playLevel === 2) {
return [prizeCategories[0]];
}
return [prizeCategories[1]];
}
if (prizeCategories[0].playLevel === 1) {
return [pr...
The task - invoke code written on c++ in another process to prevent memory JVM crashing in case if c++ library will corrupt memory.
@RestController
public class MyRestController {
@RequestMapping(path = "some/path", method = RequestMethod.POST)
public StubObject get(@RequestBody StubObje...
This Python function takes two arguments:
chr_list which is a mutable sequence of characters c
chr_counts which maps to each character c the number of occurrences n
For each character in chr_list, it inserts this character into the list before its last occurrence n-1 times. The resulting list...
I am having below code which get and set the data in the cache using the synchronized block and i want to know if i can optimize the below code :-
AtomicReferenceTest<Integer> cachedIntRef = new AtomicReference<Integer>();
boolean wasCached = true;
Integer cachedInt = cachedIntRe...
Introduction
I want to develop this project for more than two years. I just started do it couple days ago. I used for detect plant or residue pixels in crop row image but it provides a good example how to detect green and red color which at that time I can not found it on Stackoverflow/Stackexch...
So I've written up what the title says.
Obviously, I'm looking for speed, safety and ease of use. To achieve the perfect ratio I've made some functions straight away crash if the input is wrong (in debug mode only, otherwise UD). The design is inspired by the C++ counterpart.
Will be glad to ...
I'm bundling my css in my app as follows
bundles.Add(new StyleBundle("~/MyApp /Content/css")
.Include("~/MyApp/Content/css/vendors.css", new CssRewriteUrlTransform())
.Include("~/MyApp/Content/css/base.css", new CssRewriteUrlTransform())
...
I always disliked how basic html tooltips are and often find myself employing modals to display more information, but it feels like the wrong solution from a UX perspective in most cases.
To that end, I have put together the following solution.
Due to the self-taught nature of my work, I fully ...
I've posted my simple ciphers on Code Review several days ago (link: here). I refactored my code and tried to define a more general "cipher" function, according to Zeta's excellent advice. I've split the code to make it more readable.
General cipher
This function takes an encoding function, "ze...
class WrapperForSomething {
auto somethingBeingWrapped;
void foo() {
// some data preparations
return somethingBeingWrapped.foo(); // this line - with or w/o return?
}
}
Assuming we cannot inherit from somethingBeingWrapped. I'm talking here only about cases where our metho...
Okay, here we go again :D (stackoverflow.com/questions/43050747/where-is-a-limit-of-overdesign?noredirect=1#comment73187856_43050747)
So a while back i started working on "LimitlessUI" - library for winforms(github.com/WithoutCaps/LimitlessUI). And one of the items that i created was "material s...
I would like to write a pseudo version of a parallel List.map with the help of Event and Thread module.
open Thread
open Event
let rec tmap f ls =
let c = new_channel () in match ls with
| [] -> []
| h::t -> let _ = create (fun c -> sync (send c (f h :: tmap f t))) c in
...
The question asks to
Write a program tail that prints the last n lines of its input. By default, n is 10, let us say, but it can be changed by an optional arguement, so that
tail -n
prints the last n lines
Now, my program takes an optional arguement n at the command line, asks for...
I'm writing a composer package that allows you to validate your data in easy and cleaner way,
I'm trying my best to follow the best design practices while working on this package.
Now i want you guys to review the code an tell me what I'm doing wrong and how it can be written in a better way.
...
This is my third attempt to create a easy to use html builder because I wasn't really satisfied with the first one that wasn't extendable at all and even the one using dynamics wasn't much better. It was difficult to use due to everything being dynamic and had to be casted everywhere but what's w...
This is my core.clj file
(ns lein-app.core
(:require [compojure.core :refer :all]
[compojure.route :as route]
[ring.middleware.reload :refer [wrap-reload]]))
(use 'ring.adapter.jetty)
(defroutes app
(GET "/" [] "<h1>Hello world</h1>")
(route/not-found "<h1>Not found<
var datesArray = Array<Dictionary<String,Any>>()
//datesArray is from array of months and every month have dates
func tableView(_ tableView: UITableView, cellForRowAt indexPath:IndexPath) -> UITableViewCell {
let date = datesArray[indexPath.row]
if let cell = tableView.dequeue...
I am currently working through a python course about objected oriented programming. I was given this first assignment to work on:
Create a simple class, MaxSizeList, that acts a little bit like a
list, with a pre-configured limit on its size.
Here some test calling code that imports ...
Execution restricted to one core for portability. Average time (without printBoard()) on Intel(R) Celeron(R) CPU N2840 of 100 runs:
GCC 5.4.0 with -O3: 0.48885504s
Clang 3.8.0 with -O3: 0.52578794s
My ideas for further optimization were board reflection and rotation, but I don't know how to i...
I'm implementing alpha-beta pruning for a chess engine in TypeScript
Here's the code:
public static alphabetta(board: Board, player: Player = Player.CPU, move?: Move, depth: number = 0,
α: number = -Infinity, β: number = +Infinity): EvaluatedMove {
const { gameOver, winner } = board;
...
I'm currently writing a little tool to get into Go.
As I'm not familiar with the language I'm especially looking for
Conventional go stuff.
utility.go feels wrong.Should I wrap the client and email/password into a struct in utility? What would you advice.
Every critic on any thing is very we...
After taking a course in C++ I have written my first program and I'm looking for some feedback. Both on coding style and maybe algorithmic improvements. The code can also be found at GitHub. It compiles and runs fine, but is not very robust for user input.
I opted to try to emulate the game Min...
I just started making a text adventure using Haskell, but because this the largest project I have done in Haskell, I wanted to ask about it here before I got too far on it. I am still pretty new to Haskell, so I would really appreciate any advice at all on how this could be improved. Thanks so mu...
