HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
ArashPartow
exprtk
C++2012–2023
ArashPartow / exprtk

exprtk

C++ Mathematical Expression Parsing And Evaluation Library https://www.partow.net/programming/exprtk/index.html

Web DevelopmentLanguages & CompilersScience & EngineeringLibraries & SDKs
Explore on GitHubRead Hacker News discussions
3Distinct people
3Mentions
0Explicit recommenders
1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

C++ Mathematical Expression Parsing And Evaluation Library https://www.partow.net/programming/exprtk/index.html

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, 1:49:46 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 year3 dated mentions

Observed mentions: 2012-05-12 20:58:30 UTC to 2023-08-09 19:32:22 UTC.

012012-01-01 00:00:00 UTC to 2013-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments20122013-01-01 00:00:00 UTC to 2014-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2014-01-01 00:00:00 UTC to 2015-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments20172018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023

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.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20122012-01-01 00:00:00 UTC2013-01-01 00:00:00 UTC110
20132013-01-01 00:00:00 UTC2014-01-01 00:00:00 UTC000
20142014-01-01 00:00:00 UTC2015-01-01 00:00:00 UTC000
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC000
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC000
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC110
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC000
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC000
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC101

What Hacker News says

3 sources
poetaster·Aug 9, 2023
I wanted to chime in as a calculator dev dude. Qalculate is really nice if you want the kitchen sink, which I do on the desktop. I also, depending on the task use speedcruch which others have mentioned. Using https://github.com/ArashPartow/exprtk I have one calculator with a repl at 512kb, including a QML wrapper. I have a combined rpn calculator using sympy (based on the work of others) with exprtk as a 'programmer's calculator' on the side (https://github.com/poetaster/fibonacci). And several QML apps for symbolic CAS using sympy. I have way too many calculators. They are so much fun to build. Now I ask myself, port the Qalculate methods to macros for exprtk or check out using libqalculate? I'm not sure. exprtk is so light? And adding macros discrete.
In Qalculate – A multi-purpose cross-platform desktop calculator
schoetbi·Feb 17, 2017Submission

Ask HN: Survey: Scripting languages for realtime applications

I am looking for scripting languages that are suited for realtime # programming. The main criteria is that there is no stop-the-world garbage collector as in Python or Lua. The main approach these languages use is a reference counting garbage collector Some candidates I have found are: - Squirrel (http://www.squirrel-lang.org/) - Angelscript (http://www.angelcode.com/angelscript/) - EEL (http://eelang.org/) - GameMonkey Script (https://github.com/publicrepo/gmscript) incremental GC - Exprk (https://github.com/ArashPartow/exprtk) More a expression evaluator than a language Some candidates that are not quite suited for me yet: - Luna (Beta) (https://github.com/tj/luna) - pforth (infix vs postfix) (https://github.com/philburk/pforth) My question is if I have all relevant projects on the list here or if I am missing an importa
Read the rest
nt possibly more widely used language? # Meaning of realtime: When talking about realtime some people understand differnet things. One group thinks it is about web applications that get updated data from the server without reloading a page. I on the other sind mean realtime as in realtime operating systems (RTOS).
2 points · Open discussion

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.