I have written a working Brainfuck interpreter using ClojureScript, reagent, core.async and dommy. I am not very satisfied with the code, however, in particular the central part of the code - the interpreting function, step. It is a pages-long mess of nested conditionals. I would like to simplify...

Let's say you want to extract the output of a console application till you've found a certain keyword. If you have found the keyword the started console process still should be running, however the function which has found the keyword should return. Here is a minimal application which simply cre...

It's for a commercial purposes. It's not going to a database, but will just be emailed to a person via phpMailer. I am not good at php (truly awful). Asking for code review so I know whether this is good enough for going production or not. Thank you for your time & help. <?php session_start();...

I needed a quick caching mechanism to save a bitmap (picture). There was no way I could get the bitmap to the class where I need to upload it to the server so for the sake of organization and code cleanliness I created this. I have never seen this before implemented this way but to me this not on...

I wrote this small pagination directive after having to do something similar for an app I'm writing. For the app I wanted something that would be flexible and could be reused just about anywhere. Because of time constraints I ended up writing a directive that was very specific to that app, but ...

I am currently working on a GPA Calculator side project over holiday break to become more familiar with Swing, but I find the number formatting is more complicated than in regular JAVA. At the moment I have a working prototype, but the number formatting on the overall GPA is way to long. I have t...

Scenario goes like this: User enables plugin from within Google Spreadsheet Authenticates with their Google Analytics Account They select which accounts they'd like to perform an audit on Four spreadsheets are returned with information on their account filters, view filters, goals, and view set...

I recently accepted the "Java BigDecimal" challenge at Hackerrank.com. For sorting in reverse order I used a modified version of MergeSort. However, in my Merge function I could not find a way to incorporate Infinity into my BigDecimal array as the SENTINEL value. The problem is that BigDecimal d...

I have created a solution for the problem as below: Given a string S consisting of letters 'O' and 'Z'. Calculate the minimum number of changes required such that all O's are adjacent to each other and all Z's are adjacent to each other. One change is equivalent to swapping two neighbouring lett...

Can I please have some advice on optimizing and cleaning up my code? #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdbool.h> bool pal_perm(char*); int main() { printf("The output is %sa palindrome.\n", pal_perm("tact coa")? "": "not "); return 0; } bool pal_per...

Decided it was finally time to start learning 3D graphics! Not really sure why I can't get this texture to be mapped though. I'm able to draw 4 walls around the user. I'm trying to map the texture to the front wall, but this is where I'm falling. The texture loads correctly as far as I can tell...

I am working on a script that calls a third party api, which needs a valid server hostname. Any of these format should be allowed, for example: server.domain.com server1.domain.com something.domain.com 123456x.domain.tld etc... So, I have put together the following script to sanitize the ser...

Decided to finally start learning 3D! I'm able to draw four big blue walls around the camera, but I'm not able to get a texture mapped to the front wall, or any other wall for that matter. float xRot = 0.0f; float yRot = 0.0f; float zRot = 0.0f; float zTrans = -60.0f; int boxList; GLuint textur...

The Go programming language has that slice type, which is under the hood a pointer to an actual array. This allows treating the subarrays as actual arrays with almost no performance overhead. This code snippet is about implementing slice type for C++ arrays and vectors. slice.h: #ifndef SLICE_H...

I wrote a script to convert csv-files in human readable format and vice versa like this $ ./transform table.csv inflate | $ ./transformtable table.t cola colb colc | cola;colb;colc; 1 a g | 1;a;g; 2 b g | 2;b;g; 3 c ...

This is ProjectEuler Q48 I don't know why but retmod is giving wrong answer after (16^16)%(10^10) https://www.hackerearth.com/notes/number-theory-1/ #include<iostream> using namespace std;//a^b%c long long int retmod(long long int a,long long int b,long long int c) { if(b==0)return 1; else...

I am creating a connect 4 game in python and I have managed to write the code so that it runs. However I have a lot of duplicated data in it and was just wondering if anyone could help me to refine it to minimise this? Here is my code so far: def Diag2(u, r, b, column, row): utemp1 = u-1 ut...

I'm trying to get back into programming by building an app I've had in mind for quite a while. I've created an SQLite database and have managed to get some data in it. I'm trying to display the data inside a Listview, and whilst it is displaying, I'm concerned I've made things more difficult for ...

In short I am trying to create a regular expression that only allows strings that have IVP as the first 3 characters followed by any 7 integers. For example IVP1234567 is a valid string. This is the expression I have written to test it: (IVP)\d{7}(?=\D|$) Will this work successfully?

I've started out working on a larger project using Angular for the first time. For visual feedback, I'm using Waves (Github) (you can see a demo page here). The standard way to use Waves is to include the script along with its CSS on the page and once the page has finished loading, call Waves.i...

Write a procedure substitute that takes three arguments: a list, an old word, and a new word. It should return a copy of the list, but with every occurrence of the old word replaced by the new word, even in sublists. For example: > (substitute ’((lead guitar) (bass guitar) (rhythm guitar) drums...

I would like to reverse a list using cdr, car and cons. Since lists in lisp are asymmetrical (can only insert at the beginning), I am interested on how one would write a procedure to do that without using (append). Please review my code. (define (reverse l) (define (aux orig result) ...

I am trying to learn JS and i am trying to made simple calculator which will calculate price against number of people and will give discount on some amount of people ex every 6th person is complete free . Here is example what i did till now :) http://codepen.io/anon/pen/wMoqzo html <input ...

Here is a code I wrote to concatenate data files into master file. Once the data to be pasted into the master sheet exceeds the number of rows left in the master sheet, the program will create a new master document and continue the process. Hopes this helps. Help me clean it up and make it faster...

I am trying to write a code that: First Prompt: asks the user to select the folder that contains all zipped folders where each zipped folder contains a data file. Second Prompt: Ask the user to select the master folder path to place the unzipped data files into. The program will unzip the fi...

I am currently working on a sideproject and have the basic foundation and architecture I want in place for the site. I wanted to get your opinion and thoughts on my current practices and methods before I get too deep down the rabbit hole and any potential issues would be difficult to remove. The...

I am trying to implement an HashMap in C. I am trying to used a linked list style of interfacing to make adding and removing keys easy and efficient. Searching is not something I am considering at this point as it is early in progress. I am looking for any tweaks that could make this faster, more...

I have a MongoDB collection setup where each document's JSON looks like this: { "_id" : "Stuff", "project_id" : "1234", "VehicleEntry" : [ { // Irrelevant fields removed. "VehicleStatus" : "PASSED" }, { // Irrelevant fields ...