peteraritchie

The structure of IPv4 addresses lies at the core of the internet's architecture

• does calling out IPv4 mean many of the details in this chapter apply to IPv6?

The very structure of IPv4 addresses presents an interesting duality: they serve as both identifiers and locators.

• "Locator" in what sense?

[Just as a street address indicates a specific location, an IP address designates a particular device on a network. The subnet mask, analogous to the zip code, guides data packets to their intended destination.](https://cwoodruff.github.io/book-network-programming-csharp/chapter02/#:~:text=just%20as%20

peteraritchie

HTML Entities

general

HTML		Description	HTML		Description	HTML		Description
℅	℅	care of	℞	℞	prescription	⌖	⌖	target
⁃	⁃	hypen bullet	⦾	⦾	circled white bullet	⦿	⦿	circled bullet
 		very thin space	​	​	zero-width space

Arrows

peteraritchie

<Project>
  <!-- See https://aka.ms/dotnet/msbuild/customize for more details on customizing your build -->
  <PropertyGroup>
  </PropertyGroup>
  <Target Name="PostClean" AfterTargets="Clean">
    <RemoveDir Directories="$(BaseIntermediateOutputPath)" />
    <RemoveDir Directories="$(BaseOutputPath)" />
  </Target>
</Project>

peteraritchie

<# e.g.:
. .\visual-studio-classes.ps1

$csproj = [Project]::CreateClassLib(".\Solution\ClassLib\ClassLib.csproj");
$csproj.AddClass('MyClass');
#>
class Project {
	[string]$Folder;

    Project() {

peteraritchie

Visual Studio HTTP Files

env

{
  "dev": {
    "ClientSecret": {
      "provider": "AzureKeyVault",
      "secretName": "clientSecret",

peteraritchie

Search for

^(?'tab'\s*)try\s*\r?\n+\k<tab>\{\r?\n(?'tried'(.*\r?\n)+)\k<tab>\}\r?\n\k<tab>catch\s+.*\r?\n\k<tab>\{\s*\r?\n(?'caught'(.*\r?\n)+)\k<tab>\}(\r?\n)+

Replace with:

${tried}

---

peteraritchie

Notables:

https://learn.microsoft.com/en-us/training/modules/manage-end-end-deployment-scenarios-using-bicep-azure-pipelines/3-configure-applications-virtual-machines#:~:text=when%20you%20use%20deployment%20jobs%2C%20pipeline%20artifacts%20are%20automatically%20downloaded%20by%20default.%20if%20you%20use%20regular%20jobs%2C%20use%20the%20downloadbuildartifacts%20task%20to%20download%20a%20pipeline%20artifact

Practices:

https://learn.microsoft.com/en-us/training/modules/structure-bicep-code-collaboration/3-improve-parameters-names#:~:text=it's%20better%20to%20use%20uniqueness%20suffixes%20rather%20than%20prefixes.%20

https://learn.microsoft.com/en-us/training/modules/build-first-bicep-deployment-pipeline-using-azure-pipelines/4-deploy-bicep-files-pipeline#:~:text=a%20good%20idea,one%20you%20expect.

peteraritchie

dotnet new sln -n MySolution
gci -r '*.csproj' | ForEach-Object { dotnet sln MySolution.sln add $_.FullName;}

peteraritchie

Akin's Laws Spacecraft Design

From Akin's Laws of Spacecraft Design

1. Engineering is done with numbers. Analysis without numbers is only an opinion.

2. To design a spacecraft right takes an infinite amount of effort. This is why it's a good idea to design them to operate when some things are wrong .

3. Design is an iterative process. The necessary number of iterations is one more than the number you have currently done. This is true at any point in time.

peteraritchie

RFC 1924

!#$%&()*+-0123456789;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz{|}~

Base85

!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstu