The Boston Lisp Meeting Returns
on Tuesday October 20th 2020 at 7:00 pm
at Google Meet

Alex Plotnick
From His Desk
will give a talk on

The Polar Policy Language

In this talk, I'll discuss the design and implementation of Polar, a declarative policy language aimed at solving complex authorization problems. A Polar interpreter forms the core of oso, an open source authorization engine that you can embed in your application. Polar rules can access application instances and specialize on (multiple) application-defined classes, which allows policies to be cleanly separated from application code but still have direct access to the data needed to make authorization decisions. Applications in a variety of languages (currently Python, Ruby, Java, JavaScript, and Rust) are supported by a shared core, written in Rust, together with a host-language library that communicates with the core over an event-based FFI.

Jonathan Godbout
From Probably His Desk
will give a lightning talk on


Protocol Buffers are the data interchange format pioneered by Google. There has been several iterations of Lisp Protocol buffers from Robert Brown's to Scott McKay. At Google we have recently been extensively updating CL-Protobufs. This lightning talk will ever so briefly go over the changes.


The meeting will be held online at the link above at 7:00 pm EST.


Boston Lisp meetings have been rare of late. We would like to go back to monthly meetings, if you are interested in giving talks please message the boston-lisp mailing group. We discuss a range of topics that may interest the greater Lisp community (including Common Lisp, Scheme, Clojure, Emacs, Racket, or any other programmable programming system).

Typically evenings begin with two 5-minute "lightning talks", continues with a main speaker for an hour or so, and finishes with food (see below).

We encourage both veterans and newbies to come and meet, maybe becoming collaborators, mentors, or disciples on some Lisp project. Hobbyists, academics, and professionals are invited to socialize and chill out with a generally friendly group. There is no cost to attend.

For the latest information, always check the Boston Lisp website (short url: j.mp/BostonLisp; also works downcased)


Since everyone will be at home, we hope you will be supplying your own food.


See past meetings.


The boston-lisp mailing lisp receives meeting announcements and a few other topics relevant to the Boston Lisp community.