karpathy

"""
Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
BSD License
"""
import numpy as np

# data I/O
data = open('input.txt', 'r').read() # should be simple plain text file
chars = list(set(data))
data_size, vocab_size = len(data), len(chars)

hellerbarde

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

teknoraver

package main

import (
	"context"
	"flag"
	"fmt"
	"io"
	"net"
	"net/http"
	"os"

teknikqa

// On the Last.FM website go to the page which lists the tracks that you have loved.
// Open Chrome DevTools (or Firefox or any modern browser that has a built in Javacript Console)
// and run the following command.
// This basically clicks on all the delete buttons on the page and reloads the page.
jQuery('.love-button--loved').each(function(_, b) {
  b.click();
});
location.reload();

johntyree

#!/usr/bin/env sh

# Download lists, unpack and filter, write to stdout
curl -s https://www.iblocklist.com/lists.php \
  | sed -n "s/.*value='\(http:.*=bt_.*\)'.*/\1/p" \
  | xargs wget -O - \
  | gunzip \
  | egrep -v '^#'

sk22

var elements = Array.from(document.querySelectorAll('.js-link-block'))
elements.map(function (element) {
  var nameElement = element.querySelector('.chartlist-name')
  return nameElement && nameElement.textContent.replace(/\s+/g, ' ').trim()
}).forEach(function (name, i, names) {
  if (name !== names[i + 1]) return
  var deleteButton = elements[i].querySelector('[data-ajax-form-sets-state="deleted"]')
  if (deleteButton) deleteButton.click()
  location.reload()
})

chilts

var request = require('request');
var unzip   = require('unzip');
var csv2    = require('csv2');

request.get('http://s3.amazonaws.com/alexa-static/top-1m.csv.zip')
    .pipe(unzip.Parse())
    .on('entry', function (entry) {
        entry.pipe(csv2()).on('data', console.log);
    })
;

HybridDog

// this is two times as fast when compiled with -Ofast

// see https://graphics.ethz.ch/~cengizo/Files/Sig15PerceptualDownscaling.pdf

#include <stdlib.h> // malloc, EXIT_*
#include <string.h> // memset
#include <math.h>
#include <png.h>

#define SQR_NP 2 // squareroot of the patch size, recommended: 2

joepie91

'use strict';

const parseExpression = require("./parse-expression");

function findAll(regex, target) {
	let results = [], match;
	
	while (match = regex.exec(target)) {
		results.push(match);
	}

John07

ffmpeg -re -i http://url.com/playlist.m3u8 -c copy -bsf:a aac_adtstoasc output.mp4