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Pony (programming language) - Wikipedia
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Programming language
Pony (also referred to as ponylang) is a free and open source, object-oriented, actor model, capabilities-secure, high performance programming language.[7] Pony's reference capabilities allow even mutable data to be safely passed by reference between actors. Garbage collection is performed concurrently, per-actor, which eliminates the need to pause program execution or "stop the world".[8][9][10] Sylvan Clebsch is the original creator of the language.[11][12] It is now being maintained and developed by members of the Pony team.[13]
The language was created by Sylvan Clebsch, while a PhD student at Imperial College London. His professor at that time was Sophia Drossopoulou, who is also well known for her contributions to computer programming, and as a lecturer. According to developers who have talked to Sylvan, he was frustrated with not having a high performance language that could run concurrent code securely, safely, and more simply.[14]
At its core, Pony is a systems language designed around safety and performance.
- Type safety - Pony is a type safe language.[15]
- Memory safety - There are no dangling pointers and no buffer overruns. There is no null but optional types can be safely represented using unions with the None type.[16]
- Exception safety - There are no runtime exceptions. All exceptions have defined semantics and are always caught.
- Concurrency safety - The type system employs reference capabilities to ensure (at compile time) that there are no data races nor deadlocks.[19][20][21]
- Lock-free - By design, Pony avoids the need for traditional locking mechanisms, which eliminates the overhead and contention associated with locks.[14]
- Native code - Pony is an ahead-of-time compiled language. There is no interpreter or virtual machine[16]
- Concurrent garbage collection - Each actor's heap is collected separately and concurrently, avoiding the need to "stop the world" for global collection.[11][12][21]
In Pony, instead of a main function, there is a main actor. The creation of this actor serves as the entry point into the Pony program.
actor Main
new create(env: Env) =>
env.out.print("Hello, world!")
There are no global variables in Pony, meaning everything must be contained within an instance of a class or an actor.[14] As such, even the environment that allows for printing to standard output is passed as a parameter.[14]
- ^ "Sylvan Clebsch". ACM.
- ^ "First public release". GitHub. 28 April 2015.
- ^ "Ponyc/LICENSE at main · ponylang/Ponyc". GitHub.
- ^ Daniele BonettaLuca; Svizzera italiana; Stefan Marr; Walter Binder (2 November 2016). "GEMS: Shared-Memory Parallel Programming for Node.js". oracle. Retrieved 10 March 2025.
Pony is itself inspired by the design of E's programming model
- ^ Liam Tung. "Microsoft opens up Rust-inspired Project Verona programming language on GitHub". ZDNet.
Project Verona, which also borrows concepts from Cyclone, a "safe dialect of C" and Pony, which has key contributors from Microsoft Research
- ^ "Introduction to Actor Model". adabeat. 8 August 2024. Retrieved 8 March 2025.
- ^ Sylvan Clebsch; Juliana Franco; Sophia Drossopoulou (12 October 2017). "Ownership and Reference Counting Based Garbage Collection in the Actor World". Proc. ACM Program. Lang. 1 (OOPSLA): 72:1–72:28. doi:10.1145/3133896. Retrieved 24 December 2024.
- ^ "Introduction to the Pony Programming Language". LinkedIn. Society 5 Solutions. 15 October 2024. Retrieved 28 December 2024.
- ^ Daniel Caccamo (2018). "GoA: Actors with Locally Managed Memory for Go". UWSpace. Retrieved 28 December 2024.
- ^ a b Charles Humble (14 March 2016). "Using the Actor-model Language Pony for FinTec". InfoQ. Retrieved 24 December 2024.
- ^ a b Sophia Drossopoulou (14 September 2020). "Pony, Actors, Causality, Types, and Garbage Collection". InfoQ. Retrieved 24 December 2024.
- ^ "Team Pony". GitHub. Retrieved 28 December 2024.
- ^ a b c d Kristoffer Grönlund (22 January 2018). Everyone gets a pony!. archive. Linux Conference Australia 2018 (LCA2018). Retrieved 28 December 2024.
- ^ John Mumm (19 March 2019). "Safely Sharing Data: Reference Capabilities in Pony". codemotion. Retrieved 28 December 2024.
- ^ a b Ankush Thakur (21 December 2024). 12 New Programming Languages You Should Know. geekflare. Retrieved 3 January 2025.
- ^ Sean T Allen (30 May 2018). "Introduction to the Pony programming language". opensource. Retrieved 28 December 2024.
- ^ Sylvan Clebsch; Sophia Drossopoulou; Sebastian Blessing (October 2015). "Deny capabilities for safe, fast actors". In Elisa Gonzalez Boix, Philipp Haller, Alessandro Ricci, Carlos Varela (ed.). AGERE! 2015: Proceedings of the 5th International Workshop on Programming Based on Actors, Agents, and Decentralized Control. Pittsburgh, PA, USA: Association for Computing Machinery. pp. 1–12. doi:10.1145/2824815.2824816. ISBN 9781450339018.
{{cite conference}}: CS1 maint: multiple names: editors list (link)
- ^ a b Juliana Franco; Sylvain Clebsch; Sophia Drossopoulou; Jan Vitek; Tobias Wrigstad (9 March 2018). "Soundness of a Concurrent Collector for Actors" (PDF). imperial. Retrieved 8 March 2025.
- Mölle, Andreas (Dec 2017). "Developing concurrent programs with Pony". Linux Magazine (205). ISSN 1536-4674.
- MCStone, Maverick (Dec 2023). Pony Playbook: Mastering the Basics of Concurrent Programming. Independently Published. ISBN 979-8870768175.
- Allen, Corby (Jul 2024). Pony Programming: The Complete Guide to Building High-Performance, Concurrent, and Secure Applications with Pony. Independently Published. ISBN 979-8332662072.
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