Programming Forum

Haven't programmed in a long time. Last project was a GCODE pathway generator I wrote several years back. My compiler is obviously several years out of date. Uses time(), itoa(), rand(). Current standard compliant compilers should have <chrono>, <thread>, <random>, and to_string() in suppliment to those more deprecated functions. This is a very simple, high speed method of generatinga alot of randomized junk data onto your drive. Make sure you have about 300MB of RAM available for the overhead. An older non-SSD might croak. Useful for making old files unrecoverable by overwriting the old space on a drive. Doesn't go …

I have three tables(table, table2,table3). From table1 i want to return three rows: Title, Desc,time,'products' AS type From table2 i want to return three rows: group_title, group_desc, created,'groups' AS type From table3 i want to return three rows: name, occupation,birth,'users' AS type $sql = "SELECT DISTINCT * FROM (SELECT table1.title, table1.desc, table1.time,'products' AS type FROM table1 ORDER BY rand() LIMIT 5) AS T UNION ALL (SELECT table2.group_name,table2.group_desc,table2.created,'groups' AS type FROM tabl2 JOIN table1 ON table2.id = table1.id ORDER BY rand() LIMIT 5) UNION ALL (SELECT table3.name,table3.occupation,table3.birth,'users' AS type FROM table3 JOIN table1 ON table3.id = table1.id ORDER BY rand() LIMIT …

I am making a ping pong game using JavaFX, but before I am going to make that, I like to test the KeyEvents. I made a simple ping pong game about 2 years ago, but I like to improve my game. And was pretty bad controlls back when I made the ping pong game, because of the not smooth controls. so here is the problem: whenever I holdpress A and switch quickly to holdpress D or D to A, same with (W to S and S to W). it just takes a little break and then move, is there something …

I am thinking of moving to ecommerce development. There is just so much out there so much so that I find myself at a loss as to where to start. I do front end development but I understand backend equally well. Ideally I would like to find a suitable e-commerce system that I can work with, tweak and customise. So if a client needs an ecommerce site my task would be to build a custom interface and hook it up with this system. If some changes are necessary to make this work that would be done. What are the best …

Python-wxPython Tutorial This tutorial will take through the basics of wxPython. ##Introduction: Let's face it. I am a dinosaur. I got my computer science degree in the mid 70s. And it won't be long before **I** am in **my** mid 70s. So why am I trying to learn Python? Mostly because learning new things keeps my brain active. And besides, nobody on Daniweb seems to be asking questions about vb.Net anymore. So I thought I'd give it a try. After a few weeks of puttering I managed to learn enough Python to rewrite all of my vbscripts (stop laughing, it's …

Firstly a little overview - my site uses Wordfence (this is not the issue - just the reason for this to begin with) -- Even if Wordfence is disabled this should still work. *its just what brought this to light.* And... I have been getting numerous login attempts from different places and IP's using the hidden password recovery, or simply force loading names into the admin page. I have seen a pattern emerging, whereas the popular name tries are: administrator, wpadmin, admin, wpadministrator, and a few others. Sometimes in the range of 150+ an hour, quite amazing, and annoying at …

Now I am developing Wordpress websites and many of my clients are asking to create online calculators for their websites. Usually, it is required to create a calculator in the shortest possible time and therefore I decided that it was not advisable to create calculators from scratch and began to search for this for ready-made plugins. I looked through a bunch of plugins, but I could not make a choice. I hesitate between these plugins: * https://wordpress.org/plugins/calculated-fields-form/ * https://wordpress.org/plugins/ucalc/ * https://wordpress.org/plugins/wp-creator-calculator/ Have you tried these plugins, should you use them? What wordpress plugins for calculators can you recommend? Thank!

So I am making a responsive audio waveform, if you don't know what that is, it is something like this: (btw this is my goal to make those audio waveforms). https://i.ytimg.com/vi/J7uN-SQtOYI/maxresdefault.jpg https://www.youtube.com/watch?v=OVMuwa-HRCQ https://www.youtube.com/watch?v=SCD2tB1qILc I don't know how to describe it, so just look at the videos and image. but my question is, how do I get the values from the "AudioSpectrumListener", it has a lambda expression. And I need the value of the magnitude. So I can print out the values. Later I will use the values to make rectangles and that rectangles will change height shape because of the …

Hi guys, I wonder if this is something I could do on this forum. I've never worked with REST, so I thought that it could be a good exercise to try to develop a very small and simple Java application and try to make use of REST as well. I found a brief which seems simple enough, I'll share it with you (I'm happy to change this of course if you think it's useful as for me it's just practice). As a Rest Client I want to submit new orders for bricks So I can start customers’ orders Given A …

I'm reading data from SQLite database table. If the SQLiteDataReader encounters a negative double an InvalidCastException is thrown. Here is my code. public void DBToArray() { string stm = "SELECT * FROM mtable"; SQLiteCommand cmd = new SQLiteCommand(stm, sqlcon); SQLiteDataReader rdr = cmd.ExecuteReader(); while (rdr.Read()) { Console.WriteLine( rdr.GetInt32(0) + " " + rdr.GetString(1) + " " + rdr.GetString(2) + " " + rdr.GetString(3) + " " + rdr.GetInt32(4) + " " + rdr.GetDouble(5) + " " + /* -5.0 no good */ rdr.GetString(6) + " " + rdr.GetString(7) ); } } Just wondering if anyone has encountered and solved this …

I am making a program, and I don't know why my program becomes unresponsive, when I click the button ): I have a feeling its because of this: "connection = server.accept();" I don't know how to fix it. I am trying to recreate this: https://stackoverflow.com/questions/18505123/how-to-use-client-chat-on-different-pc but in javafx. package yeetYeet; import java.io.EOFException; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.net.ServerSocket; import java.net.Socket; import javafx.animation.AnimationTimer; import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.TextArea; import javafx.scene.control.TextField; import javafx.scene.paint.Color; import javafx.stage.Stage; public class Server extends Application{ private ObjectOutputStream output; private ObjectInputStream input; private ServerSocket server; private Socket connection; //set up and …

Last week a group of six 'm-commerce' experts took part in a round robin discussion in Manchester, England to determine the best ways forward for developers interested in creating a serious mobile web presence yet wanting to make money through the medium of mobile advertising at the same time. Anyone who has been involved in this particular area of Internet growth will appreciate just what a serious challenge the mobile web presents to those who have not invested, in thought and deed as much as financially, in getting to grips with a realistic m-commerce marketing strategy. Unless you are creative …

> Last month, Facebook admitted to storing million of Facebook passwords in plaintext. The Verge Apr 18, 2019 We see students being taught login systems here and a recurring mistake is passwords being stored in databases. It appears that CompSci courses teach bad practices early and as we know it's hard to unlearn what you learn earlier. Further reading seems to indicate these passwords may have collected via logging. "But as Krebs on Security first reported, various errors seem to have caused Facebook’s systems to log some passwords in plain text since as early as 2012." I'm been chided for …

I am supposed to sort an array in ascending order..I have tried but then i cant get the results i want.I also tried to look it up in this forum but i still can't get it...Here is part of the code:[ICODE]void sort() { int size=10; int j,temp,i; for(i=0;i<(size-1);i++) { for(j=i+1;j<size;j++) { if(queue[i]>queue[j]) { temp=queue[i]; queue[i]=queue[j]; queue[j]=temp; } } } cout<<"Status: sorting done."<<endl; }[/ICODE] The result i getting is zero for everything...Please help me..

When we build an application, which layer should we start with? From top (UI) to bottom(Data Layer) or bottom to top?

Hello everyone, Hope you are doing , I am too much confuse to buy a gaming laptop for my younger brother, Someone suggest a website like https://pcmag.com, https://cartvela.com, and Techradar but there are too much content, I can't make a decision.

With this php code, I send a request for payment with Paypal sandbox account. However when I go to the submit page I cant see what amount I am paying: https://i.imgur.com/iTra1SQ.png -> here in the red shoulld be displayed - 10.00(amountPayable). How can I send it so it's showed? use PayPal\Api\Amount; use PayPal\Api\Payer; use PayPal\Api\Payment; use PayPal\Api\RedirectUrls; use PayPal\Api\Transaction; require 'bootstrap.php'; $payer = new Payer(); $payer->setPaymentMethod('paypal'); // Set some example data for the payment. $currency = 'GBP'; $amountPayable = 10; $invoiceNumber = uniqid(); $amount = new Amount(); $amount->setCurrency($currency) ->setTotal($amountPayable); $transaction = new Transaction(); $transaction->setAmount($amount) ->setDescription('10 GBP payment') ->setInvoiceNumber($invoiceNumber); $redirectUrls = …

How can I get internal HDD_DETLAIS = SerialNumber, Model, Manufacturer,TotalHeads ...... etc. Please help me.. Now my problem is my code run ok, but when I insert external HDD or pen drive then showing the last counting device Details please help .... i want to show only internal HHD device means OS loaded disk "C" drive Thanks Dim HDD_DETLAIS As String Dim HDD As New ManagementObjectSearcher("select * from Win32_DiskDrive") For Each HDDDET In HDD.Get HDD_DETLAIS = HDDDET("SerialNumber") + " Model-" + HDDDET("Model") + " Manufacturer-- " + HDDDET("Manufacturer") ' + " TotalHeads - " + hd("TotalHeads") '+ " Signature - …

I have been wrestling with this for two days now and getting nowhere. Something is broken, either the GridSizer control or me. I'm hoping it's me and someone can show me the problem. I've stripped my app of non-essentials. What I am building is a Sudoku app which consists of several nested controls, as can be seen in the atached image. The outer frame contains the puzzle which contains a 3x3 grid of panes. Each pane contains a 3x3 grid of tiles and each tile contains a 3x3 grid of digits. So far so good. Except for the layout. I …

hi brothers , i work on a ASP.NET MVC Project, please i try to get a cookie who created already using server side C# , and in a pure HTML page not .CSHTML i talk now about .HTML page , in this page i want to using javascript to read the value of the cookie that i created using C# . i wish if anyone can help me and thanks so much in advance.

# What Are Voronoi Diagrams? # Voronoi Diagrams are an essential visualization to have in your toolbox. The diagram’s structure is a data-driven [tessellation](https://en.wikipedia.org/wiki/Tessellation) of a plane and may be colored by random or to add additional information. ## Learn the Lingo ## The set of points that generate the Voronoi diagram are called “seeds” or “generators” for they generate the polygon shapes; in practice, the seeds are your cleaned data. Each seed generates its own polygon called a Voronoi “cell,” and all of 2-dimensional (2D) space is associated with only one cell. A Voronoi cell, or Voronoi “region” denotes …

I'm using a fairly standard MSI mobo with Intel Core i5-6400 processor and 64 GB RAM. So: Which programming language (besides assembly) is the most effective to use in this configuration when I want to do calculations/modelling trying to find the least number of combinations to fullfill some predefined conditions. More specific I have i.e. 5 sets of combinations each containing three different states: A, B and C. This gives me a total number of 243 combinations. Theoretically it is possible to reduce this number of combinations to 23 so that no matter what combination of the original 243 you …

What is the best game in 2018

Hi, I need advice on how to implement a Review Management System. Something like realized on mypresences.com or brightlocal.com Not all services allow you to interact with their API. Review services are productreviews, trustpilot, tripadvisor, whirlpool, wordifmouth, seek, indeed, glassdoor. Maybe you now a script or have an offer how it can be realize. Help me, please.

Hi guys, as part of an exercise I was involved with, I had to use the factory pattern to create a series of different objects, however I'd like to keep a list or map for what it matters of these objects and I'm getting a bit into troubles here. So basically, I have a CSV file containing some data which I'd like to use to construct my objects: the data in the spreadsheet is arranged in the following cols: name, surname, date_of_birth, type and I'm essentially reading from the spreadsheet and using the factory pattern I'm building a series of …

class foo(object): __slots__ = ['__base__'] What's expected is for `foo.__base__` to be a member_descriptor object but instead what you get is: >>> foo.__base__ <class 'object'> >>> foo.__base__ is object True I guess something happens within the magic of class construction that makes use of `__base__` as an object. I stumbled across this because my particular class represented by `foo` makes use of `__base__` for holding objects `foo` makes special instances of when called. Just something interesting to note here, and possibly some useful knowledge so others can know to stay away from `'__base__'` as a class attr name.

Am trying to draw three circles on the page but nothing shows up, anyone can tell me what is wrong here? <body> <canvas id="myCircle(3)" width="60" height="60"> Your browser does not support JavaScript, please update it before you continue</canvas> <script type="text/javascript"> function myCircle(myCircle) { var c = document.getElementById("myCircle"); var ctx = c.getContext("2d"); ctx.beginPath(); ctx.arc(30, 30, 26, 0, 2 * Math.PI); ctx.stroke(); return myCircle; } </script> </body> Thank you :)

Above program takes input of coefficient and power separately of 2 different polynomials add them up to a new polynomial.It is successfully compiled and executed in DEV CPP as C file.It Turbo C compiler add void before main function to avoid warning messages.

This was a query raised by one of a forum members at another site, where he had a worksheet filled with random numbers, and I have already answered that query [at my post here](https://vbacoder1962.wordpress.com/2019/07/15/extracting-cell-phone-numbers-from-random-strings-of-variable-length/). You may go through that post and read the logic behind the code. 

Hey community, how can i show the connected USB-Device like keyboard, mouse, webcam and so on? Or how can i search in the connected USB-Devices, if I know the name or only a part of the name? I am looking for some examples since 2 days, but no one doesn´t work. So I hope you can help me with some code examples in vb.net. best regards joshi