---
title: "Issue 513"
url: https://daily.dev/posts/issue-513-tbmcum6z3
source_url: https://haskellweekly.news/issue/513.html
type: article
source: "Haskell Weekly"
published: 2026-02-26T09:52:40.556Z
updated: 2026-02-26T09:53:01.546Z
tags: ["postgresql", "functional-programming", "haskell"]
reading_time: 4
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Issue 513

**[Haskell Weekly](https://daily.dev/sources/haskellwkly)** · 4 min read · 0 upvotes · 0 comments

## Summary

Haskell Weekly Issue 513 curates the latest news and releases from the Haskell community. Featured content includes benchmarking LLM proficiency with Advent of Code puzzles in Haskell, a podcast episode on functional programming in industry, a web-based heap visualizer for ghc-debug, a tutorial on the Foldable typeclass for Elm developers, a guide to efficient PostgreSQL integration in Haskell, and a DSL for Template Haskell AST construction. Brief announcements cover releases of Stack 3.9.3, a new Haskell debugger v0.12, cassava 0.5.5.0, esqueleto-postgis v4, kdl-hs 1.0.0, a reactive Haskell notebook called sabela, and Haskell.org's acceptance into Google Summer of Code 2026.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://haskellweekly.news/issue/513.html>

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---

Tags: [#postgresql](https://daily.dev/tags/postgresql), [#functional-programming](https://daily.dev/tags/functional-programming), [#haskell](https://daily.dev/tags/haskell)

[View this post on daily.dev](https://daily.dev/posts/issue-513-tbmcum6z3)