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@jboner
jboner / latency.txt
Last active May 4, 2024 18:45
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
@bishboria
bishboria / springer-free-maths-books.md
Last active April 25, 2024 06:27
Springer made a bunch of books available for free, these were the direct links
@acutmore
acutmore / README.md
Last active January 21, 2024 20:30
Emulating a 4-Bit Virtual Machine in (TypeScript\JavaScript) (just Types no Script)

A compile-time 4-Bit Virtual Machine implemented in TypeScript's type system. Capable of running a sample 'FizzBuzz' program.

Syntax emits zero JavaScript.

type RESULT = VM<
  [
    ["push", N_1],         // 1
    ["push", False],       // 2
 ["peek", _], // 3
@developit
developit / *valoo.md
Last active November 13, 2023 08:39
🐻 Valoo: just the bare necessities of state management. 150b / 120b. https://npm.im/valoo

🐻 valoo

just the bare necessities of state management.

Usage

Hotlink it from https://unpkg.com/valoo.

See Interactive Codepen Demo.

@caged
caged / d3-server.js
Last active October 17, 2023 04:05
Directly render and serve d3 visualizations from a nodejs server.
// Start `node d3-server.js`
// Then visit http://localhost:1337/
//
var d3 = require('d3'),
http = require('http')
http.createServer(function (req, res) {
// Chrome automatically sends a requests for favicons
// Looks like https://code.google.com/p/chromium/issues/detail?id=39402 isn't
// fixed or this is a regression.
@jaredwilli
jaredwilli / todoCtrl.js
Created April 27, 2013 08:30
todoFactor and TodoCtrl modules for the angularFire TodoMVC example to show an alternative example for using angularFireCollection to sync data with a Firebase by using a Factory to do so. https://github.com/firebase/angularFire/issues/24
'use strict';
todomvc.controller('TodoCtrl', [ '$scope', 'todoFactory', 'filterFilter',
function OtherCtrl($scope, todoFactory, filterFilter) {
$scope.todos = todoFactory.getAllTodos('todos');
$scope.newTodo = '';
$scope.editedTodo = '';
$scope.addTodo = function() {
todoFactory.addTodo($scope.newTodo);
};
$scope.editTodo = function(todo) {
@WebReflection
WebReflection / String.prototype.template.js
Last active August 17, 2022 04:04
ES6 Template like strings in ES3 compatible syntax.
// this is now a module:
// https://github.com/WebReflection/backtick-template#es2015-backticks-for-es3-engines--
var template = require('backtick-template');
// just string
const info = 'template';
`some ${info}` === template('some ${info}', {info});
@shangaslammi
shangaslammi / concatenative.hs
Created February 17, 2012 06:01
Concatenative Programming in Haskell
{-# LANGUAGE TypeOperators, NoImplicitPrelude #-}
import qualified Data.List as L
import Control.Arrow
import Control.Monad
import Prelude (Bool, Int, Float, fst, snd, flip, ($), uncurry, Show(..), String, (.), otherwise, IO)
import qualified Prelude as P
data s :. a = !s :. !a
infixl 1 :.
@robwormald
robwormald / angular2.jspm.md
Last active January 5, 2022 21:21

Angular2 + JSPM cheat sheet

First time setup

  • install jspm beta: npm install -g jspm@beta
  • set up your project: jspm init
  • install dependencies: jspm install angular2 reflect-metadata zone.js es6-shim

This will create a jspm_packages folder, and a config.js file.

Open the config.js file - this file manages options for the System.js loader - tweak it as appropriate

@shannonmoeller
shannonmoeller / multiline-regexp.js
Last active April 12, 2021 22:16
Multiline Regular Expressions using ES6 Template Strings
/**
* Inspired by XRegExp via 2ality
* http://www.2ality.com/2012/12/template-strings-xregexp.html
* http://xregexp.com/
*/
import test from 'ava';
export function rx(flags) {
const trailingComments = /\s+#.*$/gm;