cocowalla’s gists

cocowalla / open-telemetry-config.cs

Created May 31, 2023 14:10

A rough example of how to use Serilog.Sinks.OpenTelemetry to send logs to Azure Application Insights

	builder
	.UseSerilog((ctx, _, logConfig) =>
	{
	logConfig.ReadFrom.Configuration(ctx.Configuration, "Log");
	}, writeToProviders: true)
	.ConfigureServices((ctx, services) =>
	{
	services.AddOpenTelemetry()
	.ConfigureResource(res => {
	...

cocowalla / ExponentialWeightedMovingAverage.cs

Created May 7, 2021 10:23

Exponential Weighted Moving Average

	public class ExponentialWeightedMovingAverage
	{
	private bool isInitialized;

	// Smoothing/damping coefficient
	private double alpha;

	public double Average { get; private set; }

	public ExponentialWeightedMovingAverage(int samplesPerWindow)

cocowalla / data-classification.sql

Created February 5, 2021 09:08

Conditional SQL Server Data Classification

	DECLARE @compatibility_level TINYINT = 0;
	SELECT @compatibility_level = compatibility_level FROM sys.databases WHERE name = 'MyDatabase';
	PRINT CONCAT('Database compatibility level is: ', @compatibility_level);

	IF @compatibility_level < 150
	BEGIN
	RAISERROR('Data Classification will not be performed, as database compatibility level %d is not high enough', 10, 1, @compatibility_level);
	SET NOEXEC ON;
	END;
	GO

cocowalla / Ecies.cs

Last active June 22, 2024 14:07

Simple ECIES implementation

	using System;
	using System.Security.Cryptography;

	// ReSharper disable SuggestVarOrType_SimpleTypes - BCL rules
	namespace Crypto
	{
	/// <summary>
	/// Simple implementation of ECIES (Elliptic Curve Integrated Encryption Scheme) based on http://www.secg.org/sec1-v2.pdf, section 5.1
	/// Things not implemented:
	/// - Encoding parameters using compressed points; only uncompressed points are used

cocowalla / bsod-report.html

Created August 10, 2019 15:04

BSOD report for mac-precision-touchpad

	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
	<html><head><title>Crash List</title></head>
	<body>
	<h3>Crash List</h3>
	<br><h4>Created by using <a href="http://www.nirsoft.net/" target="newwin">BlueScreenView</a></h4><p><table border="1" cellpadding="5"><tr bgcolor="E0E0E0">
	<th>Dump File
	<th>Crash Time
	<th>Bug Check String
	<th>Bug Check Code
	<th>Parameter 1

cocowalla / WyHash64.cs

Created July 10, 2019 19:46

Wyhash incremental hash

	using System;
	using System.Runtime.CompilerServices;
	using System.Security.Cryptography;

	// ReSharper disable InconsistentNaming
	// ReSharper disable SuggestVarOrType_BuiltInTypes
	namespace WyHash
	{
	/// <inheritdoc />
	/// <summary>

cocowalla / code.asm

Created May 8, 2019 10:32

SIMD XOR Optimisation

cocowalla / Maths.cs

Last active April 23, 2023 15:07

64-bit integer multiplication

	// Non-intrinsics path is based on https://stackoverflow.com/a/51587262/25758, which is faster than any other portable 64-bit multiplication function I've found

	public static class Maths
	{
	/// <summary>
	/// Multiplies 2 unsigned 64-bit integers, returning the result in 2 ulongs representing the hi and lo bits
	/// of the resulting 128-bit integer
	/// </summary>
	/// <remarks>
	/// <seealso cref="System.Numerics.BigInteger"/> can perform multiplication on large integers, but it's

cocowalla / Dockerfile

Last active July 11, 2024 17:23

TimescaleDB on debian stretch-slim

	# Docker image for PostgreSQL with the TimescaleDB extensions installed, running on a Debian Stretch-Slim base

	# Begin by building TimescaleDB
	FROM postgres:11.2 AS build

	ENV TIMESCALEDB_VERSION 1.2.2
	ENV TIMESCALEDB_SHASUM="c8e8071c24707e3fa8a50abb788c85d03a1bd9d9dea2e273b4abf407f39c182a timescaledb-${TIMESCALEDB_VERSION}.tar.gz"

	RUN buildDeps="curl build-essential ca-certificates git python gnupg libc++-dev libc++abi-dev pkg-config glib2.0 cmake libssl-dev" \
	&& apt-get update \

cocowalla / EnumExtensions.cs

Created February 4, 2019 19:44

Enum display name extension method

	using System;
	using System.Collections.Concurrent;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Linq;
	using System.Reflection;

	namespace Acme.Utils
	{
	public static class EnumExtensions