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Pure Programming Language

agraef.github.io Software & code Software projects Software engineering Candidate
Screenshot of agraef.github.io captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 3 calendar years, with breakout response in 2 of them.

submissions
3
submitters
3
observed span
2017–2024
peak thread · 34 comments
141 pts
latest 20+ return · 2024-02-27
141 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

A "Why Pure?" section would be useful. The symbolic manipulation part is something I haven't encountered in other mainstream languages (at the level of the language). It's equivalent to Python's SymPy, right?

elbear·141-point thread·

This is pretty neat! https://github.com/agraef/pure-lang/wiki/Rewriting#construct...: > As a bonus, you also get "constructors with equations" for free. E.g., suppose that we want lists to automagically stay sorted and eliminate duplicates. In Pure we can do this by simply adding the following equations for the : constructor: > x:y:xs = y:x:xs if x>y; x:y:xs = x:xs if x==y; > [13,7,9,7,1]+[1,9,7,5]; [1,5,7,9,13] (The point about this global override is addressed later. The rewriting can be lexically scoped.)

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
275

reference only — not used in Hall rules or ranking

Total comments
56

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2017-11-26Pure: a modern functional programming language based on term rewritingFirst breakoutblacksqr12834
2019-04-15Pure, a functional programming language based on term rewritinganon12121260
2024-02-27Pure Programming LanguageBest thread · Latest 20+ point returntosh14122