The EF Core N+1 problem: 51 queries from one loop
A report loop that looks harmless sends a separate SELECT per customer through lazy loading. Real SQL logs, timings at three data sizes, and two fixes.
8 min read
Blog
On learning C#, moving into software, and what a first job asks for.
RSSC# unit testing: first, decide what working means
Your first xUnit test doesn't prove the code works, it forces you to say what working is. Real dotnet test output, green and red, and how to read both.
8 min read
Is learning to code still worth it when AI writes code
Two models got the same prompt and both returned C# that compiles. One of them is wrong in 55 cases out of 2349 and never raises an error about it.
8 min read
Coding bootcamp cost: what the money actually buys
One US bootcamp charges the same for its classroom and its mostly self-study schedule. The price follows deadlines and people, not the material.
2 min read
NullReferenceException C#: not the line that broke
FormatReceiptLine used a null customer. FindCustomer, the method that created that null, already returned and isn't even in the stack trace.
9 min read
Your First ASP.NET Core Minimal API
Four route mappings in one Program.cs produce a working HTTP server. Real responses, real headers, and the two mistakes you'll hit on your first POST.
7 min read
C# debugging: when printing stops paying off
Adding one Console.WriteLine and re-running costs over six seconds, measured. One breakpoint stop hands you seven variables without touching the file.
9 min read
Install .NET SDK on Windows and run your first program
The installer asks you nothing and takes a few minutes. The time goes into checking that the version answering your terminal is the one you think it is.
8 min read
CS0029 implicit conversion: no cast will help
The compiler is not asking for a cast. It is telling you no route exists between these two types, and a different number covers the case where one does.
5 min read
Career change to programming: a plan that fits a real week
It doesn't start with picking a language. It starts with an honest hours audit, three real schedules, and the arithmetic of what a quarter buys you.
9 min read