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Mastering Development

How can I find which category has the most products shipped and the net income from sales in that category?

Using the w3schools.com SQL tutorial Northwind database, I’m trying to display the category that has the most products shipped. Additionally, I want to display the net income from all sales in that category. I can’t figure out how to take the category with the most products shipped, and use the amount of products shipped to […]

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Mastering Development

format symbol $” in PowerShell For C# code

I am trying to convert the C# code of the link below to PowerShell code, and I can’t process the C# symbol【 $" 】 in PowerShell. https://github.com/dlemstra/Magick.NET/blob/master/docs/Drawing.md Console prompt error: ERROR: + … ew-Object ImageMagick.MagickImage([string]::format("$caption:{$textTo … ERROR: + ~~~~~~~~~ ERROR: Variable reference is not valid. ‘:’ was not followed by a valid variable name character. […]

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Mastering Development

Google OR-Tools TSP spanning multiple days with start/stop times

I am using Google OR-Tools to optimize the routing of a single vehicle over the span of a several day. I am trying to: Be able to specify the number of days over which to optimize routing. Be able to specify the start location and end location for each day. Be able to specify the […]

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Raspberry Pi User Help

Problem in calling florence keyboard in UI

I’m making a UI using PyQt5 on a raspberry pi and I’m trying to make a Florence keyboard to appear every time when the user focuses on the LineEdit field but I always became this error: WARNING: Service name lost WARNING: Notification failed and the process just workes for the very first focus in. Here […]

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Mastering Development

Invoke a serie of actions when Enter key is pressed

I have a Swing project and I have an action listener on JTextField for Tab key as follows. There is a JOptionPane.showMessageDialog() inside the getSum() method. And when Tab is pressed option pane will show an error message. My problem is that, when I press Enter on OK button of Error Message dialog, a series […]

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Mastering Development

Java Swing – Invoks a series of actions when Enter key is pressed

I have one Swing project and I have an action listener on JTextField for Tab key as follows. There is a JOptionPane.showMessageDialog inside the getSum() method. And When TAB Key is pressed optionpane will show an error message. My Problem is that when I press ENTER Key on OK button of Error Message dialog a […]

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Mastering Development

Created this procedure, when I execute I am not getting excepted results

I have created this procedure and I am not getting all records out. It should print id, ssn and ValidSSN. ValidSSN should come from case statement where is checking if SSN is valid. Please could you let me know why? Number of other records matches from table I am pulling from but no results for […]

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User Help

Excel Cell Currency Picker

I want to show the currency symbol (as format not text or concat prefix) in a cell which is set as a defaulted "AUD" currency so it’ll look like "AUD 1,450,000.00" but have that same cell also have a drop down option to change it’s format to other currencies. I understand one could simply format […]

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Mastering Development

How can I make this ItemListener for JRadioButton

I’m trying to use sizeP for array. Make totBill equal to (array element selected) of margheritaPizza. But it does not change value at all. As if the listener is doing no good. Is there something wrong in my ItemListener or the code as a whole? Any help will do. I’m just a 3rd year college […]

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Linux Mastering Development Ubuntu

Second monitor not detected – ASUS G15-GA502

I’ve already tried several solutions, but I think the main problem is that I don’t know what the source of the problem is. I am new to Ubuntu, I had an older Acer (i5-7300HQ and GTX 1050) which ran Ubuntu flawlessly. Now I upgraded to an ASUS G15 (R7-4800HS and RTX 2060 Max-Q) and when […]