timheuer

File-Based .NET apps

This workspace contains file-based .NET apps. These are standalone .cs files that can be run directly without creating a project file or traditional project structure.

Key Features

• No project file required - Run C# code directly from a .cs file
• Built-in CLI integration - Uses the standard dotnet CLI, no additional tools needed
• Scales to full projects - Can be converted to traditional project-based apps when needed
• Same C# language - Full C# language support, same compiler and runtime

cajuncoding

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using System.Text.Json.Nodes;

namespace CajunCoding
{
    public static class SystemTextJsonMergeExtensions
    {

mthalman

FROM mcr.microsoft.com/dotnet/sdk:8.0-jammy AS installer

RUN mkdir /pwsh-symlink \
    && ln -s /usr/share/powershell/pwsh /pwsh-symlink/pwsh

FROM mcr.microsoft.com/dotnet/runtime:8.0-jammy-chiseled

COPY --from=installer /usr/share/powershell /usr/share/powershell
COPY --from=installer ["/pwsh-symlink", "/usr/bin"]

SonoSooS

This document is intended to document certain inner workings of the CPU.

There have been efforts by emu-russia and gekkio to have the CPU decapped, and so we have the decode ROM accessible to us. This means, that we know exactly what each opcode does (besides some nuanced behavior related to HALT, STOP, and some state management related to interrupts and power saving which are hard to untangle).

Table of contents

• Terminology
• Fetch and stuff
• Regular instructions
• Opcode holes (not implemented opcodes)

mort3za

# Generate a new pgp key: (better to use gpg2 instead of gpg in all below commands)
gpg --gen-key
# maybe you need some random work in your OS to generate a key. so run this command: `find ./* /home/username -type d | xargs grep some_random_string > /dev/null`

# check current keys:
gpg --list-secret-keys --keyid-format LONG

# See your gpg public key:
gpg --armor --export YOUR_KEY_ID
# YOUR_KEY_ID is the hash in front of `sec` in previous command. (for example sec 4096R/234FAA343232333 => key id is: 234FAA343232333)

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD