Mark Zhitomirski mz0

To uninstall the Xcode Command Line Tools (CLT) from your Mac, you must manually delete the installation directory using the terminal, as Apple does not provide a built-in uninstaller.

1. Locate the Installation Path

Before deleting, confirm where the tools are installed on your system. Run this command in Terminal:

xcode-select -p  # output: /Library/Developer/CommandLineTools

Q: my PR can merge into main --ff-only , and only "Rebase and merge" option is available in PR. When applied, the PR is merged with commit SHA different from the one in the PR HEAD. But why!? Gitlab never surprised me in that case.

A: Google AI Overview:

Even if your Pull Request (PR) branch is up-to-date with main (making it eligible for a fast-forward merge), selecting "Rebase and merge" on GitHub will always produce new commit SHA hashes, changing them from your original HEAD.

GitHub’s "Rebase and Merge" deviates slightly from a standard local git rebase:

Runtimes (in Rust unless noted)

Get a PGP key and check validity

MySQL PGP pubkey bug of 2025-10-22

export KEY16=B7B3B788A8D3785C
gpg --no-default-keyring --keyring /tmp/keyring.gpg --keyserver keyserver.ubuntu.com --recv-key $KEY16 \
  && gpg --export --no-default-keyring --keyring /tmp/keyring.gpg --output /tmp/$KEY16.gpg 

### Or ###
export GNUPGHOME=$(mktemp -d)
gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys $KEY16

write this prompt for Cline AI-agent:

@/src/schemas/note.ts @/src/services/note-manager.ts

create a schema and message manager like note.ts.
Messages will be between the Telegram user (that's @/src/schemas/user.ts) and an AI-agent.

“A Toolkit for Computation on GPUs”. Ian Buck and Tim Purcell. In GPU Gems. Randy Fernando, ed. 2004
2003-04-11 Mark Harris page cs.unc.edu/~harrism/gpgpu
2015-05-02 Mark Harris - "A Brief History of General-Purpose Computation on GPUs"
- at 3:43 a slide titled "The first GPGPU: IKONAS RDS-3000" shows
  - an ad saying "The GRAPHICS SYSTEM for the 80's"
  - 1978 Nick Englund & Mary Whitton founded Ikonas Graphics System
  - 1985 Video "All computation is taking place in the Adage 3000 Display"
  - (SIGGRAPH '86) Time Van Hook wrote microcode for solid modeling, ray tracing
UNC Pixel Planes and PixelFlow

Veritasium/Perimeter Institute

2025-04-07 What Everyone Gets Wrong About AI and Learning – Derek Muller Explains

why no revolution in 100 years? (Edison, Radio, TV, Khan, MOOC..)
Effort is The Algorithm
Inspiring teacher ??
15:28 The Magical Number Seven, Plus or Minus Two. Some Limits on Our Capacity for Processing Information. George A. Miller, 1955

Implications for Education 26:42

26:48 Eliminate extraneous cognitive load: e.g. clear sound, no accent, subtitles, legible font)

JavaScript

was built in only 10 days in 1995 by a single person, Brendan Eich, who was tasked with building a simple scripting language to be used in version 2 of the Netscape browser. It was initially called LiveScript, but since the Java language was so popular at the time, the name was changed to JavaScript - although Java and JavaScript are in no way related.

For the first few years, after it was built, JavaScript was a simple scripting language to add mouseover effects and other interactivity. Those effects were being added to webpages using the <script> HTML element.

	#!/bin/sh

	if [ ! -n "$1" ]; then
	echo "No file path argument found"
	elif [ -f $1 ]; then
	b64=$(sha384sum $1 \| grep -o -E '^[a-f0-9]{96}' \| xxd -r -p \| base64)
	echo "integrity=\"sha384-${b64}\""
	else
	echo "\"$1\" not found, or is not readable"
	fi

	CIA-triad - Confidentiality, Integrity, Availability
	DAO - Decentralized Automous Org
	DeFi - Decentralized Finance
	DON - Decentralized Oracle Network
	OCR - Off-Chain Reporting
	Rollup - Off-Chain Txn Bundler
	TEF - Transaction Execution Framework
	VRF - Verifiable Random Function