charlesroper

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

avaidyam

class HotInputDataUnknown1 {
	0x4
	0x8
	0x10
}

class HotInputData {
	UInt32 unknown; // + 0x0
	UInt32 modifiers; // + 0x4
	UInt32 keyCode; // + 0x8

swillits

struct Keycode {
	
	// Layout-independent Keys
	// eg.These key codes are always the same key on all layouts.
	static let returnKey                 : UInt16 = 0x24
	static let enter                     : UInt16 = 0x4C
	static let tab                       : UInt16 = 0x30
	static let space                     : UInt16 = 0x31
	static let delete                    : UInt16 = 0x33
	static let escape                    : UInt16 = 0x35

DavidKuennen

(function (context, trackingId, options) {
    const history = context.history;
    const doc = document;
    const nav = navigator || {};
    const storage = localStorage;
    const encode = encodeURIComponent;
    const pushState = history.pushState;
    const typeException = 'exception';
    const generateId = () => Math.random().toString(36);
    const getId = () => {

mikowl

// Inspired by https://twitter.com/coderitual/status/1112297299307384833 and https://tapajyoti-bose.medium.com/7-killer-one-liners-in-javascript-33db6798f5bf

//  Remove any duplicates from an array of primitives.
const unique = [...new Set(arr)]

// Sleep in async functions. Use: await sleep(2000).
const sleep = (ms) => (new Promise(resolve => setTimeout(resolve, ms)));
// or
const sleep = util.promisify(setTimeout);

JadenGeller

import AppKit

struct EventMonitor: AsyncSequence {
    typealias Element = NSEvent
    
    enum Scope {
        case local
        case global
    }
    var scope: Scope = .local

shaps80

import SwiftUI

#if os(macOS)
public typealias Font = NSFont
public typealias FontDescriptor = NSFontDescriptor
#else
public typealias Font = UIFont
public typealias FontDescriptor = UIFontDescriptor
#endif

SMUsamaShah

These are VMs running built with JavaScript/WASM allowing you to run an operating system within your browser, all client side.

Emulators

VMs

1. https://copy.sh/v86/
2. https://webvm.io/
3. https://bellard.org/jslinux/
4. https://jamesfriend.com.au/pce-js/ (https://github.com/jsdf/pce)

yoavg

Reinforcement Learning for Language Models

Yoav Goldberg, April 2023.

Why RL?

With the release of the ChatGPT model and followup large language models (LLMs), there was a lot of discussion of the importance of "RLHF training", that is, "reinforcement learning from human feedback". I was puzzled for a while as to why RL (Reinforcement Learning) is better than learning from demonstrations (a.k.a supervised learning) for training language models. Shouldn't learning from demonstrations (or, in language model terminology "instruction fine tuning", learning to immitate human written answers) be sufficient? I came up with a theoretical argument that was somewhat convincing. But I came to realize there is an additional argumment which not only supports the case of RL training, but also requires it, in particular for models like ChatGPT. This additional argument is spelled out in (the first half of) a talk by John Schulman from OpenAI. This post pretty much

bendc

:root {
  --ease-in-quad: cubic-bezier(.55, .085, .68, .53);
  --ease-in-cubic: cubic-bezier(.550, .055, .675, .19);
  --ease-in-quart: cubic-bezier(.895, .03, .685, .22);
  --ease-in-quint: cubic-bezier(.755, .05, .855, .06);
  --ease-in-expo: cubic-bezier(.95, .05, .795, .035);
  --ease-in-circ: cubic-bezier(.6, .04, .98, .335);

  --ease-out-quad: cubic-bezier(.25, .46, .45, .94);
  --ease-out-cubic: cubic-bezier(.215, .61, .355, 1);