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@jboner
jboner / latency.txt
Last active April 19, 2024 23:08
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
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 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@staltz
staltz / introrx.md
Last active April 19, 2024 18:49
The introduction to Reactive Programming you've been missing
@patriciogonzalezvivo
patriciogonzalezvivo / GLSL-Noise.md
Last active April 19, 2024 13:41
GLSL Noise Algorithms

Please consider using http://lygia.xyz instead of copy/pasting this functions. It expand suport for voronoi, voronoise, fbm, noise, worley, noise, derivatives and much more, through simple file dependencies. Take a look to https://github.com/patriciogonzalezvivo/lygia/tree/main/generative

Generic 1,2,3 Noise

float rand(float n){return fract(sin(n) * 43758.5453123);}

float noise(float p){
	float fl = floor(p);
  float fc = fract(p);
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
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

@PurpleBooth
PurpleBooth / README-Template.md
Last active April 18, 2024 00:56
A template to make good README.md

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

//
// BottomSheetView.swift
//
// Created by Majid Jabrayilov
// Copyright © 2019 Majid Jabrayilov. All rights reserved.
//
import SwiftUI
fileprivate enum Constants {
static let radius: CGFloat = 16
@IsaacXen
IsaacXen / README.md
Last active April 16, 2024 15:54
(Almost) Every WWDC videos download links for aria2c.
@unnamedd
unnamedd / MacEditorTextView.swift
Last active April 16, 2024 10:18
[SwiftUI] MacEditorTextView - A simple and small NSTextView wrapped by SwiftUI.
/**
* MacEditorTextView
* Copyright (c) Thiago Holanda 2020-2021
* https://twitter.com/tholanda
*
* MIT license
*/
import Combine
import SwiftUI
//------------------------------------------------------------------------
// The SwiftUI Lab: Advanced SwiftUI Animations
// https://swiftui-lab.com/swiftui-animations-part1 (Animating Paths)
// https://swiftui-lab.com/swiftui-animations-part2 (GeometryEffect)
// https://swiftui-lab.com/swiftui-animations-part3 (AnimatableModifier)
//------------------------------------------------------------------------
import SwiftUI
struct ContentView: View {
@gbaman
gbaman / HowToOTGFast.md
Last active April 16, 2024 06:29
Simple guide for setting up OTG modes on the Raspberry Pi Zero, the fast way!

Setting up Pi Zero OTG - The quick way (No USB keyboard, mouse, HDMI monitor needed)

More details - http://blog.gbaman.info/?p=791

For this method, alongside your Pi Zero, MicroUSB cable and MicroSD card, only an additional computer is required, which can be running Windows (with Bonjour, iTunes or Quicktime installed), Mac OS or Linux (with Avahi Daemon installed, for example Ubuntu has it built in).
1. Flash Raspbian Jessie full or Raspbian Jessie Lite onto the SD card.
2. Once Raspbian is flashed, open up the boot partition (in Windows Explorer, Finder etc) and add to the bottom of the config.txt file dtoverlay=dwc2 on a new line, then save the file.
3. If using a recent release of Jessie (Dec 2016 onwards), then create a new file simply called ssh in the SD card as well. By default SSH i