Categories
Mastering Development

How to move the data that I have called from the Firebase real-time database, in a listview to another activity in android studio?

So, I have a simple listview application. When I click an item, it will send the data to the next activity using Bundle. In the first time, I use this JSON structure "teacher": [ { "name": "Carl", "age": "40" }, { "name": "Johnson", "age": "44" } ], And this is my Java code: Query query […]

Categories
Cryptocurrency Ethereum Mastering Development

Solidity Integration of Multiple Contracts and a Library

I’m trying to understand the correct way to Deploy and then Import multiple Smart-Contracts and a Library when creating one big project. As an example, the project will have the following Library and three Smart-Contracts. We begin with: The Library pragma solidity >=0.4.0 <0.8.0; library PizzaLib { struct Pizza { uint256 pieSize; string ingredients; } […]

Categories
Cryptocurrency Ethereum Mastering Development

Solidity Multiple Contracts and Inheritance issue

My smart-contract has gotten bigger than the 24K size allowed by Ethereum, so I had to break it up into smaller contracts. I then had to facilitate all sorts of inheritance and importing between these contracts to make everything work correctly again, but in the end, I was still unable to deploy successfully – and […]

Categories
User Help

Libreoffice draw forms: how to auto populate combo boxes from linked database

I am currently working on a pdf form in libre office draw that I will use on a website. The form inputs amongst other things “department”, “address”, “phone number”, etc in combo boxes. For the about 10 departments which are relevant in this case, I have all the respective fields listed in a table, that […]

Categories
Mastering Development

JAVA- AWS Cognito -Check if a user exists in Cognito User pool

I want to allow a user to enter their username/password in a field. Upon continuing, I want to run a check to see if that user already exists in the user pool. If they do, log them in and continue with app, if they do not, move to account creation flow where they will be […]

Categories
Mastering Development

how to solve the error Must Declare the Scalar Variable

I have encountered an error in vb.net. It shows Must declare the scalar variable "@FieldDeg". I can only insert data into the database by using the insertSql but not insertSql2 because it keeps showing the error at the FieldDeg, can anyone help with this codes. Thanks alot. Here is my codes. Imports System.Data.SqlClient Public Class […]

Categories
Mastering Development

How to create X elements of a predefined type xamafin forms UI

I want to create elements on the Xamarin forms UI based on user input but I do not know how to go about it. In the screenshot attached, I want to capture details pertaining to a user’s family. Each member has a name, date of birth, phone number, and email address. The user specifies the […]

Categories
Database Development

Database software solution

Our company has user data (name, email, phone number, systems of access, AD username) in a large Excel workbook. The Excel workbook is becoming very slow because of the 1000s of entries in it, and we’re looking for an alternative solution. I was think Microsoft Access because of the ease of use and ability to […]

Categories
Database Development

Database software solution

Our company has user data (name, email, phone number, systems of access, AD username) in a large Excel workbook. The Excel workbook is becoming very slow because of the 1000s of entries in it, and we’re looking for an alternative solution. I was think Microsoft Access because of the ease of use and ability to […]