I have been looking at examples of good REST APIs, and I read that Rackspace's cloud servers API is often cited in comparison with AWS's RPC-like EC2 API. However, I also saw that their API reboots a server like so: POST /servers/{server_id}/action { "reboot" : { "type" : "HARD...

I am new to the coding world as well as this site. I have been learning Java by myself for a few days now and wanted to make a gambling program just for fun and practice. I am going to ask two questions, one short, and one long. I'll ask the long one first! How does my code look for a beginner? ...

I'm trying my hand at developing a compiler and have written a PEG.js grammar for a simple programming language. A sneak peak at the grammar: /* calculates fibonacci sequence */ fn fibonacci(n int32) int32 { /* termination */ if n == 0 or n == 1 { return 1; } else { r...

I've put together a 2 dimensional bin-packing greedy algorithm. I plan to use it in a flask web application for Carpenters to find optimal yields from sheets of plywood. The algorithm is working fine, but this is the biggest project I have ever implemented (I'm a beginner..) and I'm not really ...

I have a pandas.Dataframe with a single (new) record and the following function: self.encoders # is a dict and stores a sklearn LabelEncoder() for each column self.fillNewLabels # is a pd.Series and has an entry for each column with the most frequent element def transform(self, data): for c...

I had a task to reduce my lisp Interpreter from 400 lines to 120 lines. I was able to bring it down to 255 lines without including newline after every function. I'm not able to figure out where I can reduce the lines of code. I wanted a different perspective to my code probably a repeating patte...

Please review my code and help me to improve it. I have written this code using template. Can I use more C++11? Is using top in this code is necessary? #include <iostream> template<class T> class Stack{ struct Node{ T data; Node *next; Node(T val):data(val),next(nullptr) {} }; Node *head...

I start to learn Java 8 and I wondering is that kind of using Optional class is correct? @Override public Response confirmRegister(Request request) { return mailTokenRepository.findByToken(request.getToken()).map(mailToken -> { if (mailToken.getTypeToken().equals(TypeToken.REGISTER) ...

I'm thinking about implementing a "liking" mechanism for a social network app (using Parse) whereby users select a value from a discrete slider beneath each post. The slide would range from 0-5 and reflect the post's value to users. An example of the slider is below: https://material.io/guidelin...

In my project, I need to be able to iterate through all living instances of a given class. I ran into a problem regarding static initialization/deinitization order where when an instance attempts to remove itself from the registry (in its destructor) when the program exists, there's a chance that...

I'm a begginer at python, and to start off my learning progress I created a simple program which will roll a dice and decides the probability of it. Below is what I currently have: import random rolled = [] rolledtimes = 0; biggest = [] freq = int(input('How many times would you...

I am iterating over a std::list of adresses. In the innermost loop I select elements from the list and delete them so in the next loop I do not check them again needlessly (tester.test() and the CV lambda are quite expensive). The code compiles and actually runs most of the time without issues! ...

For the past few days I've been trying to learn how to animate 2D sprites using SDL2. For that purpose, I've taken a 6 frames animation from a Pokémon game and made a PNG image out of it : The way I figured out would work fine is is by creating an array leaf_frames (Leaf being the name of the ...

404 code checker for background image, if 404 - replace with original and crop with nginx. I resize images and add new size to filename (original: 'funny_cat.jpg', resized: 'funny_cat_320_320.jpg'). If resize script haven't finished, checker replace 404 image with original and crop by nginx. Wh...

This is some code that I found in a project I work on. Please tell me that I am crazy and that this code is good. Please do. public class ExceptionHandlingHelper { static IExeptionHandlerProvider _exeptionHandlerProvider = null; static IExeptionHandlerProvider ExeptionHandlerProvider ...

I'm writing a C# implementation of Fortuna, and have implemented the core PRNG / DRBG which should produce a uniform distribution. I've run a variety of statistical random test suites over the output (Dieharder, TestU01, RaBiGeTe, PractRand) and there were enough border-line results that I'm sli...

Here's a simple Assert class I made recently. The requirements were the following: Using C++11 features (no C++14-17) A simple macro interface, that is hard to misuse. Being able to attach a Dialog to the assertion message at runtime. Here is what my code looks like. Any suggestions, idea...

Purpose I've never implemented a HashMap and thought it would be a good data structure exercise. I tried looking at the Java source code as little as possible. Discussion The HashMap was made up of an array of Entrys. Each Entry is points to another Entry (or null if it's the last Entry in the...

I implemented shopping cart with asp.net and jquery on my website , and here is my js code which calculates amount and total sum on client side: $(document).ready(function () { update(); $(".quant").change(function() { update(); }); fun...

I have been refactoring a lot of my old code lately, and with that I have been switching from sqlite3 to mysql using PDO - sqlite3 has something called "querysingle" that allows you to return single responses (as a row or a single value) from a database table. Anyways, I really liked the simplic...

Code Review Hey, I'm looking for some feedback on my general library architecture of my graphics API agnostic rendering library. I'm not really looking for feedback yet on my vulkan implementation (Or what functions/handles I have) because it is still very work in progress. Here is the git repo...

During peer reviews, a developer seemed horrified at the thought of implementing the compareToBuilder solution I chose to sort by 3 attributes. He is under the impression that the compareTo method in my class would create an inordinate number of comparators, for each individual comparison, and th...

I'm developing a MVC structured RESTful API project (thanks to the help of Mārtiņš Tereško for explaining it). Almost all of my functions look similar to this: /** * Insert Tag */ public function insertTag(Tag\Tag $tag) { try{ //Names $name = ...

Given two strings \$a = a_1 a_2 \cdots a_n\$ and \$b = b_1 b_2 \cdots b_n\$ (of equal length \$n\$) over the alphabet \$\Sigma\$, the two strings are isomorphic if there exists a bijection \$f \colon \Sigma \to \Sigma\$ such that $$ a_1 a_2 \cdots a_n = f(b_1) f(b_2) \cdots f(b_n). $$ For example...

I've got some methods in my mapper: public EventDto mapToDto(Event googleEvent, EventDto baseEventDto) { EventDto eventDto = mapToDto(googleEvent, baseEventDto.getOriginalCalendarId()); eventDto.setCalendarId(baseEventDto.getCalendarId()); eventDto.setCollectiveId(baseEventDto.getCol...

I am a newby in thinking object oriented solution for a problem.So i am trying to improve.I have tried to implement a quarantine assignment. Here is a requirement with unit test cases public class QuarantineTest { private Quarantine quarantine; @Before public void setUp() { ...

I'm trying two loop through two separate sheets going row by row starting at row 2 comparing multiple columns (Product Number, Date, Quantity) in Excel using VBA but my nested loops are taking way too long. Is there another way to loop through cutting down on time but being able to compare multip...

I am developing an application using Asp.NET core with MVC framework. I would like to ask your opinion about whether I inject my repository in a good way into my business layer. First of all, lets see my IRepository interface: public interface IRepository<T> { IEnumerable<T> GetAll(); T ...

Given a set of discrete locations (e.g. "sites") that are pairwise related in some categorical ways (e.g. general proximity) and contains local level data (e.g. population size), I wish to efficiently compute the mean correlation coefficients between local level data on pairwise locations that ar...

Originally started with a DonaldTrumpStockMonitor, which was a bot that checked Trump's tweets to see if he mentioned a company. If he did it would monitor the shareprice of said company for a week. I've rewritten, would love some critique :) https://github.com/semaaJ/TwitterStockMonitor

I have my own type of object, which implements Serializable. Here I have one called "extendedFormat" (not a terribly helpful name, yes, I know). I'm writing it out to a file like so: try { // is this the best way to do this???????? // this seems like too many streams perhaps. // like...

I have the following VB macro, which works fine, but the problem is one section of the macro which is this for loop (in bold), which is reading the cell value in the selection, and then looking in all sheets in the WB to find the match, and then insert that row into that sheet and then exiting an...

I'm trying to implement the Balanced Partition problem, where given a sequence A of $n$ elements you have to determine if it's possible to partitionate those elements in two sets $A, B$ such that the summation of each elements in both sets are the same. So, to solve this, i considered that on e...

These are some pieces of a program I wrote to help my team automatically analyze and fix medical claims that have been rejected. I have two objectives in getting this reviewed: I thought some people might be interested to see what I have done to allow my team to modify a base query through what...

I have a list of strings. Each string is a comma separated list of numbers. I want to quickly convert each of these strings into a list. So far I have done the following: My Solution So Far def convertCommaSeperatedStringToList(data): s_lists = [] for s in data: s_list = [int...

Question Description: Given a list of companies, eg {ABC, BBC} and a large list of data looks like below: Timestamp Security 10000000 IBM 10000001 Apple 10000005 PEAR 10000008 ABC 10000012 BBC Find minimum time range where you can find all companies from list above. My solution works ...

A Leap Card is essentially a travel card for Dublin, Ireland that can be used to pay for a bus or tram fare. It has to be topped up and I often forget how much I have left on it. To get familiar with Selenium, I wrote some code that gets the balance for me. I haven't worked with this framework b...

I am trying to get a good clean way to do CSS Encapsulation in Angular JS. The main goal of this is to use isolated components. This is what I have come up with so far. The method I am using is something I have seen used with React Native. You define a JavaScript object and place all your sty...

I am building my own MVC and I have a couple questions about making a database connection and what is the best practice. I have a model User which interacts with the database and I wonder what is the best practice to instantiate the database connection class. Currently I made it so my User class ...

Purpose As I've never implemented a queue, I decided to create a very simple implementation using a linked list approach. Discussion I create a singly linked list, using a private Node class that references some data and a previous Node, that will be used in my SimpleQueue class. When enqueui...

matrix = # a sparse matrix of TFIDF vectors - 28458x3218988 My aim was to create a similarity matrix comparing all documents to all documents using sklearn.metrics.pairwise.cosine_similarity but the doc notes indicated that with normalized values, such as TFIDF vectors, that `linear_kernel' was...