I can't figure out where i made a mistake. I have 2 schemas in my db (Postgre): BooksStore and PollHub. My project should use BooksStore. I use ef code-first method to create tables in schema. So I google for two…
I have a json file as follows { "desc": "my desc", "lang": "en", "issue": { "date": "2024-09-01", "title": "Empowering Razor Club" }, "stars": [ { "id": 1, "value": 5 }, { "id": 2, "value": 4 } ] } This json…
Looking for a way to find is object between two objects. Tried to convert integer to decimal using static bool Between(object value, object low, object high) { if (value == null && low == null && high == null) return…
This is my code from Visual Studio Code I want to get time format for note On [00:00.000] first minutes. 00: second seconds. 00. third miliseconds. 000 using Microsoft.SqlServer.Server; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using…
I use C#.Net to create web app on an Android device. Is it possible to read a Mifare card through NFC on an Android device with Javascript like this and handling NFC Events? I want to read block 1 of…
I'm working with EF Core 6 and PostgreSQL, and I need to construct a query that efficiently retrieves author names along with an array of their book titles. My database schema: Books BookId (number) AuthorId (number) BookName (string) Authors AuthorId…
For scientific purposes I’m writing some number crunching routines in C++ and benchmarking various ways of running computations for ultra-high-precision floating-point numbers. And when I decide on the best routine for a specific purpose, I’d like to specify a generalized…
Given: class Mammal { public int Age { get; set; } } class Human : Mammal { public string Name { get; set; } } class Stuff { public Mammal Mammal { get; set; } } And var stuff =…
I have an XML file, here is a snippet: <response> <data offset="4" length="2" pattern="[%lx]" desc="Hours"/> <data offset="2" length="2" pattern="[%lx]" desc="Minutes"/> <data offset="0" length="2" pattern="[%lx]" desc="Seconds"/> <data offset="6" length="2" pattern="[%lx]" desc="Day"/> <data offset="8" length="2" pattern="[%lx]" desc="Month"/> <data offset="10" length="2" pattern="[%lx]" desc="Year"…
I'm attempting to use a C++ class (with constructors & destructors), that has an std::thread field, in an std::vector object. I'm using C++ 17 and Visual Studio 2022 to compile all examples shown below. Here is a simple minimal example…