ztellman

vertigo

Clojure2013–2014

ztellman / vertigo · Archived

vertigo

heterogeneous structs for clojure

Languages & Compilers

Explore on GitHub Read Hacker News discussions

4Distinct people

5Mentions

0Explicit recommenders

209GitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

heterogeneous structs for clojure

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by month5 dated mentions

Observed mentions: 2013-07-10 18:56:03 UTC to 2014-05-02 16:03:58 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
Jul 2013	2013-07-01 00:00:00 UTC	2013-08-01 00:00:00 UTC	2	2
Aug 2013	2013-08-01 00:00:00 UTC	2013-09-01 00:00:00 UTC	0	0
Sep 2013	2013-09-01 00:00:00 UTC	2013-10-01 00:00:00 UTC	0	0
Oct 2013	2013-10-01 00:00:00 UTC	2013-11-01 00:00:00 UTC	2	2
Nov 2013	2013-11-01 00:00:00 UTC	2013-12-01 00:00:00 UTC	0	0
Dec 2013	2013-12-01 00:00:00 UTC	2014-01-01 00:00:00 UTC	0	0
Jan 2014	2014-01-01 00:00:00 UTC	2014-02-01 00:00:00 UTC	0	0
Feb 2014	2014-02-01 00:00:00 UTC	2014-03-01 00:00:00 UTC	0	0
Mar 2014	2014-03-01 00:00:00 UTC	2014-04-01 00:00:00 UTC	0	0
Apr 2014	2014-04-01 00:00:00 UTC	2014-05-01 00:00:00 UTC	0	0
May 2014	2014-05-01 00:00:00 UTC	2014-06-01 00:00:00 UTC	1	1

What Hacker News says

5 sources

w01fe·May 2, 2014

Also perhaps interesting for comparison, a Clojure library called Vertigo that emulates C structs with high performance on top of byte buffers: https://github.com/ztellman/vertigo

In Value Types for Java – A sketch of proposed enhancements

jamii·Oct 28, 2013

Most macros fall under one of three categories. Improving performance by removing function calls or doing work at compile time eg https://github.com/ztellman/vertigo emulates c-style structs and uses macros to calculate the correct array offsets at compile-time, so you can treat a byte-array like a rich clojure datastructure but it compiles down to inline array access. Controlling binding or control flow eg https://github.com/clojure/core.match adds a pattern matching construct similar to those found in eg haskell or ocaml. Rewriting code eg the core.async/go macro mechanically converts synchronous code into js-style callback code (examples - http://swannodette.github.io/2013/08/17/comparative/ , internals - http://hueypetersen.com/posts/2013/08/02/the-state-machines-...) EDIT: In a lazy language like haskell, you can do most of that with

Read the rest

lambdas, monad/arrow syntax and rewrite rules but the dsl syntax often ends up with just as much cognitive overhead as using a macro. Imagine how much less clear pattern matching would be in haskell if it was a library construct instead of having its own syntax.

In Lisp for C++ programmers

jamii·Oct 2, 2013

You can even write c-like structs over byte-buffers - https://github.com/ztellman/vertigo

In Garbage Collection vs. malloc/free

adrianm·Jul 10, 2013

I do not believe this is the right approach to the problem, but I do appreciate the problem you're trying to solve here. However, in my opinion - Clojure libraries shouldn't be trying to reinvent the wheel. If your goal is to expose a better interface for vector arithmetic in Clojure - write a library that does that really well. But if your primary concern is performance, please don't roll your own vector or matrix "native" interface. You will certainly never come close in speed to what has come before (BLAS implementations galore, et al). Also it's just a lot of work that is basically keeping you from working on the higher order problems out there that we desperately need to tackle. If your goal is more "Clojurey" syntax then just spend a day or two wrapping the functions you want over a tried and tested numerics implementation. Addition

Read the rest

ally, there is likely a pre-existing Java wrapper which does just that for whatever you need considering that Java is still beloved by university professors, a key demographic for fast math libraries. On the other hand, I think Vertigo ( github: https://github.com/ztellman/vertigo ) is taking a very interesting approach to the Clojure->Native problem, which I believe might be of use to any library wanting to bring performant numerics to Clojure. Unfortunately, ztellman has deprecated his OpenGL and OpenCL libraries, but I think that Vertigo in combination with OpenCL and the kernels courtesy of clMAGMA would be fantastic.

In Introducing HipHip (Array): Fast and flexible numerical computation in Clojure

prospero·Jul 10, 2013

Without knowing anything about hdf5 specifically, Vertigo [1] will let you treat a memory-mapped file (or a piece of one) as a normal Clojure data structure, as long as the element types are fixed-layout. [1] https://github.com/ztellman/vertigo

In Introducing HipHip (Array): Fast and flexible numerical computation in Clojure