---
authors:
  - seantallen
categories:
- Last Week in Pony
date: 2017-05-28T07:18:33-04:00
description: Last week's Pony news, reported this week.
draft: false
title: Last Week in Pony - May 28, 2017
---

_Last Week In Pony_ is a weekly blog post to catch you up on the latest news for the Pony programming language. To learn more about Pony check out [our website](https://ponylang.io), our Twitter account [@ponylang](https://twitter.com/ponylang), or our [Zulip community](https://ponylang.zulipchat.com).

Got something you think should be featured? There's a GitHub issue for that! Add a comment to the [open "Last Week in Pony" issue](https://github.com/ponylang/ponylang.github.io/issues?q=is%3Aissue+is%3Aopen+label%3Alast-week-in-pony).
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## Items of note

- The Pony standard library now includes a persistent set class. It [was merged](https://github.com/ponylang/ponyc/pull/1925) as part of the work being done on [RFC 42](https://github.com/ponylang/rfcs/blob/main/text/0042-more-persistent-collections.md).

- Audio from the [May 24, 2017, Pony development sync meeting](https://vimeo.com/915141928) is available. Lots of conversation during the development sync about [Joe's RFC to improve the performance characteristics of string concatention](https://github.com/ponylang/rfcs/pull/90). We also had a good discussing arising from the [stateful exceptions RFC](https://github.com/ponylang/rfcs/pull/76).
