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clojure-emacs
cider
Emacs Lisp2012–2026
clojure-emacs / cider

cider

The Clojure Interactive Development Environment that Rocks for Emacs

Developer ToolsLanguages & Compilers
Explore on GitHubRead Hacker News discussions
34Distinct people
36Mentions
0Explicit recommenders
3.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

The Clojure Interactive Development Environment that Rocks for Emacs

GitHub

Where it is used

No documented product use was verified in the last source check.

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

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 4:01:40 AM 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 year36 dated mentions

Observed mentions: 2012-05-04 20:34:18 UTC to 2026-03-02 11:24:28 UTC.

0123452012-01-01 00:00:00 UTC to 2013-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20122013-01-01 00:00:00 UTC to 2014-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2014-01-01 00:00:00 UTC to 2015-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments2015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments2016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 4 mentions; 2 submissions, 2 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 3 mentions; 1 submissions, 2 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 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): 3 mentions; 0 submissions, 3 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

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 UTC101
20132013-01-01 00:00:00 UTC2014-01-01 00:00:00 UTC202
20142014-01-01 00:00:00 UTC2015-01-01 00:00:00 UTC505
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC514
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC202
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC505
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC101
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC422
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC312
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC202
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 UTC303
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC202
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC000
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC101

What Hacker News says

3 sources
aidenn0·Sep 26, 2023
> I do think cider (https://github.com/clojure-emacs/cider) has stuff regarding stepping debuggers, but I'm not sure how common it is to use it. Maybe other Clojure users can fill me in :) I don't really care about stepping; for me the debugger is about inspecting the state of my program when an exception (maybe because I interrupted it, or because I inserted a breakpoint, or just because something went wrong) happens. Backtrace, local variables, evaluating forms at different stack frames and so-forth.
In Spinneret: A modern Common Lisp HTML generator
capableweb·Sep 26, 2023
> I mean I use let to bind a variable with the same name as a function. This is idiomatic in Common Lisp, and totally breaks things in most other languages. Aha, that should be working fine? (defn add [x y] (let [add clojure.core/+] (add x y))) The `let` binding is local, so it's referring to clojure.core/+, and outside the function `add` I can use the name `add` to call it. Seems it's handling that case correct? > I watched a video and it does seem rather complete, but [1] indicates there is no debugger? I think debuggers tend to be used as a library across many different editors, rather than the editor/plugin providing that functionality. Personally, I don't use debuggers much as the functions I write tend to be small and evaluating small executions with the repl tends to reveal the issue quickly. Sometimes when
Read the rest
refactoring others code I've used https://github.com/philoskim/debux to various degrees of success. I do think cider (https://github.com/clojure-emacs/cider) has stuff regarding stepping debuggers, but I'm not sure how common it is to use it. Maybe other Clojure users can fill me in :) > . I also don't see a profiler mentioned Yeah, as you said, the Java ecosystem basically covers that. For OSS stuff, I use VisualVM, and for professional stuff I use YourKit, both of them work well with Clojure and points out my user-space code with ease. And I've never been paid anything for actually writing/maintaining Java code, so even with that, seems I'm able to use those tools just for Clojure :) > As an aside, by "continuations" did you mean "restarts"? Ah yes, of course. The condition system and restarts :) Thanks!
In Spinneret: A modern Common Lisp HTML generator
moorg·Apr 27, 2023
For those who haven't followed the story: 2007 - the Clojure programming language is announced by Rich Hickey and gains quite a bit of traction over the next 5 or 6 years. It never becomes a "top 5" language, but it could still today be arguably considered a mainstream language. It's been endorsed as "the best general purpose programming language out there" by "Uncle" Bob Martin[1] (author of Clean Code) and Gene Kim[2] (auther of The Phoenix Project, the seminal DevOps book). The fact that Rich spent two years working on it without pay and without the commercial backing many other languages enjoy is a real testament to his commitment and his vision. A Clojure-related emacs package[3] quotes Rich when it starts a REPL: "Design is about pulling things apart." 2012 - the Datomic database is announced by Rich Hickey's company. The databa
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se is praised for its ingenuity and its "time travel" features. It was designed to be deployed anywhere in the beginning, but, over time, it became difficult to deploy outside of AWS environments and even the AWS deployment path was quite cumbersome--the Datomic marketing page used to feature a maze-like diagram of all the AWS-specific features needed to make the thing work (it would be nice to find a link to that picture); I'd think most companies would have trouble digesting that and integrating it into their technology "stack". 2020 - Nubank (a Brazilian fintech backed by at least one US venture firm and a large production user of Datomic) acquires Rich Hickey's company. It appears Datamic never gained much use outside of a handful of companies. Making it free of charge (2023) may be the cost-effective thing to do in such a situation if it costs more to handle billing and payments than are brought in. The reason they're not releasing the source code could be legal one or simply the fact that open sourcing a large piece of software takes a lot of effort--something a for-profit financial services company like Nubank doesn't prioritize (rightly so). 1: https://blog.cleancoder.com/uncle-bob/2019/08/22/WhyClojure.... 2: https://itrevolution.com/articles/love-letter-to-clojure-par... 3: https://github.com/clojure-emacs/cider/blob/master/cider-uti...
In Datomic is Free

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