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Program Analysis Resources

(draft; work in progress)

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	package main

	import (
	"flag"
	"fmt"
	"log"
	"sync"
	"time"
	)

	@ExperimentalPagerApi
	@Composable
	fun WormHorizontalPagerIndicator(
	pagerState: PagerState,
	modifier: Modifier = Modifier,
	activeColor: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current),
	inactiveColor: Color = activeColor.copy(ContentAlpha.disabled),
	indicatorWidth: Dp = 8.dp,
	activeIndicatorWidth: Dp = 25.dp,
	indicatorHeight: Dp = indicatorWidth,

	/** @param sampleRate {number} */
	/** @param channelBuffers {Float32Array[]} */
	function audioBufferToWav(sampleRate, channelBuffers) {
	const totalSamples = channelBuffers[0].length * channelBuffers.length;

	const buffer = new ArrayBuffer(44 + totalSamples * 2);
	const view = new DataView(buffer);

	const writeString = (view, offset, string) => {
	for (let i = 0; i < string.length; i++) {

	// >>> DatHost Competitive Config 0.1 <<< //


	// Reset from Practice to Competitive
	sv_cheats "false" // Disable cheats
	mp_ct_default_grenades "" // Spawn CTs without grenades
	mp_t_default_grenades "" // Spawn Ts without grenades
	sv_showimpacts "0" // Don't show bullet impacts
	sv_falldamage_scale "1" // Enable fall damage
	sv_full_alltalk "0" // Disable voice chat with anyone

	async function generateOneTimePassword(rawKey: Uint8Array, counter: number): Promise<number> {
	const data = new DataView(new ArrayBuffer(8));
	data.setBigUint64(0, BigInt(Math.floor(counter)), false);

	const algo = { name: 'HMAC', hash: 'SHA-1' };
	const key = await crypto.subtle.importKey('raw', rawKey, algo, false, ['sign']);
	const hmacHash = new Uint8Array(await crypto.subtle.sign(algo, key, data.buffer));

	const offset = hmacHash[hmacHash.byteLength - 1] & 0x0f;
	const hotp = (hmacHash[offset] & 0x7f) << 24

	{ stdenv, autoPatchelfHook }:

	stdenv.mkDerivation rec {
	pname = "wasmcloud-binaries";
	version = "1.0";

	src = ./.; # Assuming the binaries are in the current directory

	nativeBuildInputs = [ autoPatchelfHook ];

	import { decode } from "blurhash"

	export function blurHashToDataURL(hash: string \| undefined): string \| undefined {
	if (!hash) return undefined

	const pixels = decode(hash, 32, 32)
	const dataURL = parsePixels(pixels, 32, 32)
	return dataURL
	}