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John Clary johnclary

  • City of Austin Transportation Department
  • Austin, TX
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View anonymity-notes.md

Geospatial privacy initial cheatsheet

There's more to it than this but this is a decent starting point.

  1. If there are personal identifiers in the dataset, the safest approach is to remove them entirely. If you need to keep them in to enable analytics on an 'anonymous user over time', make sure that you don't use a reversible technique like MD5 hashing. See the NYC Taxicab debacle for an example. 2. If you use hashes, use a long salt value and a cryptographically okay hash like SHA512. 3. Or randomize data order and assign serial (increasing integer) numbers to identifiers. 4. But really just removing any kind of identifiable ID is better than trying to obscure it.
  2. Set lower bounds for aggregation: if someone filters an API down to a single record, you may want to return nothing. There's the case where someone's able to craft a well-filtered query and just see one user’s data. See
@tinkertim
tinkertim / simple-egg-pasta.md
Last active Sep 20, 2020
Simple yet semi-foolproof egg pasta dough
View simple-egg-pasta.md

Description

This is a simple egg pasta recipe that I've been refining over the years of making fresh pasta for my family. It's based on a recipe I picked up while I was a line cook at a family Italian place about 20 years ago that has long since gone out of business; I've put it back together and adjusted it so it scales down as easily as it does up. Originally, this was made in 10kg (20+ pound) batches.

This dough isn't suitable for extruders, it is intended for rolling and cutting. That means you can make pretty much any kind of noodle, or lasagna sheet out of it. If you want to make ravioli or other stuffed pasta, you want to use a recipe with quite a bit more egg in it, and more steps for drying. If you want to make shaped pasta, such as shells, you probably want a durum wheat & water (eggless) dough recipe instead.

Yield

@YagoLopez
YagoLopez / deep-search-javascript-object.js
Last active Jan 12, 2021
Deep search javascript object
View deep-search-javascript-object.js
/* Attribution: http://techslides.com/how-to-parse-and-search-json-in-javascript */
//return an array of objects according to key, value, or key and value matching
function getObjects(obj, key, val) {
var objects = [];
for (var i in obj) {
if (!obj.hasOwnProperty(i)) continue;
if (typeof obj[i] == 'object') {
objects = objects.concat(getObjects(obj[i], key, val));
} else
@croxton
croxton / SSL-certs-OSX.md Generate ssl certificates with Subject Alt Names
View SSL-certs-OSX.md

Generate ssl certificates with Subject Alt Names on OSX

Open ssl.conf in a text editor.

Edit the domain(s) listed under the [alt_names] section so that they match the local domain name you want to use for your project, e.g.

DNS.1   = my-project.dev

Additional FQDNs can be added if required:

@heyalexej
heyalexej / pytz-time-zones.py
Created Nov 16, 2016
list of pytz time zones
View pytz-time-zones.py
>>> import pytz
>>>
>>> for tz in pytz.all_timezones:
... print tz
...
...
Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
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