onderweg

const DATA_HND = 0x002d;

const parseData = (data) => {
    const rawTemp = data.readInt16LE(0);
    const rawHum = data.readInt16LE(2);
    return {
        temperature: rawTemp / 100,
        humidity: rawHum / 100
    }
}

clsr

// ==UserScript==
// @name        xkcd 1288 substitutions
// @namespace   http://github.com/mcef
// @description Substitutions that make reading the news more fun
//
// @include http://www.bbc.com/*
// @include http://www.cbc.ca/*
// @include http://www.theguardian.com/*
// @include http://www.telegraph.co.uk/*
// @include http://www.theonion.com/*

rantav

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...