tnn4

WRAP Framework for making better decisions.

Helps avoid common decision-making biases.

WRAP

Widen your options
Reality-test assumptions
Attain distance
Prepare to be wrong

C# inlining

using System.Runtime.CompilerServices; 

public class inliningExample{
  [MethodImpl(MethodImplOptions.AggressiveInlining)]
  public void methodToInline(){
    System.Console.WriteLine("I got inlined");  
  }

Closures

The function closes over its outer environment.
The function is "bound" to the outer scope variables.
Closures are about data persistence.
Allow functions to keep track of local state

What would happen if there were no closure?

Look at the following example.

How to minimize screen tearing if not using v-sync

What causes screen tearing?

The monitor and screen buffer(that the GPU writes to) are out of sync.

If the GPU sends a new image to the monitor while it's in the middle of rendering an image, the monitor will continue to render the image but with the latest data sent from the GPU (so it's not the same image at the top and the bottom of the tearing). 1

Screen tearing is maximized when the GPU is rendering max frames that is a harmonic of the refresh rate.

Powershell Examples

Check if environment variables exist

if ($null -eq $env:FOO) {echo "it's null"}

Allow scripts

If you get an error that running scripts on the system is disabled:

Set-ExecutionPolicy -executionPolicy RemoteSigned -Scope CurrentUser

git-examples

Init git repo

# GIT INIT
# create repo on Github, requires https://cli.github.com/
gh repo create

## initialize directory for git
git init

Paths in different languages

Python

import sys
import os

print("\n")
print("sys.path[0] = ", sys.path[0])
print("os.path.dirnam(__file__) = ", os.path.dirname(__file__))

SSH setup

ssh help: man ssh

Install ssh server

sudo apt install openssh-server

Start ssh server

	# e.g. vs_enterprise.exe --layout c:\VSLayout --all

	$LAYOUT_PATH="vs-layout-all"
	$BOOTSTRAPPER="vs_Community.exe"

	$WORKLOAD_DOTNET="Microsoft.VisualStudio.Workload.ManagedDesktop"
	$WORKLOAD_CPP=""

	# create installer with all components
	./vs_Community.exe --layout $LAYOUT_PATH --lang en-us --all

	# Install wsl

	# this script requires administrator privileges
	# check if running as administrator
	$currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
	$is_running_as_admin = $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

	if($is_running_as_admin) {
	# continue
	}