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@aaronshaf
aaronshaf / bookmarklet-expanded.js
Last active May 13, 2024 14:35
Copy text from Amazon's Cloud Reader. Helpful for students that need block quotes.
javascript: (function () {
new_window = window.open();
new_window.document.body.innerHTML = $("iframe")
.contents()
.find("iframe")
.contents()
.find("body")
.get(1).innerHTML;
new_window.document.body.querySelector("#content-overlays").remove();
})();

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
L2 cache reference ........................... 7 ns                     14x L1 cache
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns                     20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

#!/usr/bin/env bash
set -e
target_osx=$(sw_vers -productVersion)
project_dir=/Users/rkmax/development/aseprite
skia_dir=/Users/rkmax/development/skia
arch="$(uname -m)"
bundle_trial_url=https://www.aseprite.org/downloads/trial/Aseprite-v1.2.40-trial-macOS.dmg