dadhi

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonParserIterator {
  public static void main(String[] args) throws IOException {
    String json = "{ \"fx\": [{ \"pk\": \"ALL=\" }, { \"pk\": \"EUR=\" }] }";
    
    ObjectMapper mapper = new ObjectMapper();
    JsonNode root = mapper.readTree(json);

dadhi

using System;
using System.Reflection.Emit;
using System.Diagnostics;

public class Program
{
	public static void Main()
	{
		var con = typeof(B<int>).GetConstructors()[0];
		

dadhi

#![allow(unused)]
fn main() {
use std::mem::{self, MaybeUninit};

let data = {
    // Create an uninitialized array of `MaybeUninit`. The `assume_init` is
    // safe because the type we are claiming to have initialized here is a
    // bunch of `MaybeUninit`s, which do not require initialization.
    let mut data: [MaybeUninit<Vec<u32>>; 1000] = unsafe {
        MaybeUninit::uninit().assume_init()

dadhi

object obj;

var r = 0;

const int cnt = 1000000;
var constructorInfo = typeof(Class).GetConstructor(new[] { typeof(int) })!;
var hCtor = constructorInfo.MethodHandle;
RuntimeHelpers.PrepareMethod(RuntimeMethodHandle.FromIntPtr(hCtor.Value));
var pCtor = (delegate* managed<object, int, void>)hCtor.GetFunctionPointer();

dadhi

using System.IO.Pipelines;
using System.Net;
using System.Net.Security;
using Microsoft.AspNetCore.Connections;
using Microsoft.AspNetCore.Connections.Features;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Server.Kestrel.Core;

var builder = WebApplication.CreateBuilder(args);

dadhi

graph TB
    A((1, 2))-->B((2))
    A-->C((3))
    A-->D((4))
    B-->E((5))
    B-->F((6))
    B-->G((7))
    C-->H((8))
 D-->I((9))

dadhi

//live: https://scastie.scala-lang.org/dadhi/G2uzgCqXSbiav34bM602iw/68

trait EntryFactory[K] {
  def create(key: K): Entry[K]
}

object EntryFactory {
  implicit def anyFactory[K]: EntryFactory[K] =
    new EntryFactory[K] {
      override def create(key: K) = KEntry(key, key.hashCode)

dadhi

Minimal APIs

WebApplication

Creating an application

var app = WebApplication.Create(args);

app.MapGet("/", () => "Hello World");

dadhi

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

dadhi

NuGet/Home#5986 (comment)

I've found that you can manually control which .dlls to reference and which .dlls to copy to output from a NuGet package if you turn off all assets on the PackageReference:

<PackageReference Include="Foo.MyPackage" Version="1.0.0" ExcludeAssets="all" GeneratePathProperty="true" />

and then manually reference the .dlls you need: