Dariusz Woźniak dariusz-wozniak

Useful IL Opcodes

IL opcodes documentation designed with dynamically building assemblies in C# in mind. This documentation implies you know the basics of C# and programming fundamentals, but not how a computer operates at the deep level of understanding (e.g. stacks, heap, instructions, opcodes, etc.)

What's IL?

If you don't know what IL is, it stands for Intermediate Language, also referred to as Common Intermediate Language (CIL). CIL is the one that's used in generating IL code for dynamic assemblies in C#.

Dynamic PGO in .NET 6.0

Dynamic PGO (Profile-guided optimization) is a JIT-compiler optimization technique that allows JIT to collect additional information about surroundings (aka profile) in tier0 codegen in order to rely on it later during promotion from tier0 to tier1 for hot methods to make them even more efficient.

What exactly PGO can optimize for us?

Profile-driving inlining - inliner relies on PGO data and can be very aggressive for hot paths and care less about cold ones, see dotnet/runtime#52708 and dotnet/runtime#55478. A good example where it has visible effects is this StringBuilder benchmark:
Guarded devirtualization - most monomorphic virtual/interface calls can be devirtualized using PGO data, e.g.:

void DisposeMe(IDisposable d)

Migration to ASP.NET Core in .NET 6

WebApplication and WebApplicationBuilder
Differences in the hosting model
Building libraries for ASP.NET Core
FAQ
Cheatsheet

WebApplication and WebApplicationBuilder

Semantic Commit Messages

See: https://github.com/dariusz-wozniak/semantic-commits

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

	# Copyright (C) 2024 by sanjacob

	# Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.

	# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING
	# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
	# DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
	# OR PERFORMANCE OF THIS SOFTWARE.

	DECLARE @SearchStr nvarchar(100)
	SET @SearchStr = '## YOUR STRING HERE ##'


	-- Copyright © 2002 Narayana Vyas Kondreddi. All rights reserved.
	-- Purpose: To search all columns of all tables for a given search string
	-- Written by: Narayana Vyas Kondreddi
	-- Site: http://vyaskn.tripod.com
	-- Updated and tested by Tim Gaunt
	-- http://www.thesitedoctor.co.uk

	<%@ Page Language="c#" EnableViewState="true" CodeBehind="MissingProperties.aspx.cs" AutoEventWireup="False" Inherits="EPiServer.Reference.Commerce.Site.Plugins.MissingProperties" Title="Missing Properties" %>
	<%@ Register TagPrefix="EPiServerUI" Namespace="EPiServer.UI.WebControls" Assembly="EPiServer.UI, Version=11.21.4.0, Culture=neutral, PublicKeyToken=8fe83dea738b45b7" %>

	<asp:content contentplaceholderid="MainRegion" runat="server">
	<div class="epi-formArea" ID="Pagetypes" runat="server">
	<div class="epi-size25">
	<div>
	<asp:GridView ItemType="EPiServer.Reference.Commerce.Site.Plugins.MissingProperties.Result" ID="PropertiesViewControl" runat="server" AutoGenerateColumns="false" >
	<Columns>
	<asp:TemplateField HeaderText="Type" ItemStyle-Wrap="false">

	Func<Task> act = async () => await sut.DoSth(null!);

	await act.Should().ThrowExactlyAsync<ArgumentNullException>();