RSrsmckinney·Nov 30, 2019
In Frinkmanifold-systems
manifold
Java2018–2026
manifold-systems / manifold
manifold
Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.
13Distinct people
125Mentions
0Explicit recommenders
2.8KGitHub stars
What to know before exploring
What it is
Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.
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
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 8:03:49 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 year125 dated mentions
Observed mentions: 2018-10-30 05:10:46 UTC to 2026-07-23 19:57:57 UTC.
* 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
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 18 | 15 | 3 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 13 | 4 | 9 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 21 | 5 | 16 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 33 | 17 | 16 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 19 | 4 | 15 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 15 | 3 | 12 |
What Hacker News says
18 sourcesType-Safe GraphQL without a code generation step or other atrocities
4 points · Open discussionUnit expressions with Java, remarkably expressive
4 points · Open discussion“Just-in-time code generation” the coolest language feature you never heard of
17 points · Open discussionJava: Operator Overloading as a Compiler Plugin
2 points · Open discussionUnit Expressions built into Java, seeing is believing
3 points · Open discussionOperator Overloading Added to Java
1 points · Open discussionManifold: Java Operator Overloading, Unit Expressions, Ranges, and Science
3 points · Open discussionData classes are nice, but they are not a general substitution for Properties, which address the greater getter/setter boilerplate concern. That said, you can use project Lombok for that pretty straightforwardly. You can also use project Manifold[1] to add useful features many of which Scala lacks:
* Type-safe metaprogramming (like F# type providers)
* Structural Typing
* Extension methods
* String interpolation
* Templates
* Type-safe reflection
* [Un]Checked exceptions
[1]: https://github.com/manifold-systems/manifold
In Scala on Track to Support Java 9 Module SystemNice job!
On the whole the howtographql series is instructive but results in a ton of boilerplate code. The GraphQL framework[1] from the Manifold project avoids all of that with the "manifold" concept, which is similar to F#'s type providers.
Currently manifold targets Java exclusively, but the framework is designed to support other JVM languages. Perhaps clojure could be on the radar? Food for thought.
[1]: https://github.com/manifold-systems/manifold/tree/master/man...
In Show HN: Hacker News Clone – Clojure, GraphQL Learning ProjectManifold: Java Extension Methods and Type-Safe Metaprogramming
4 points · Open discussionDefine Java_has_a_preprocessor
2 points · Open discussionShowing the 15 most recent of 18 sources. Enable JavaScript to search and browse every indexed mention.