# Opa

> programming language

**Wikidata**: [Q3353033](https://www.wikidata.org/wiki/Q3353033)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Opa_(programming_language))  
**Source**: https://4ort.xyz/entity/opa

## Summary
Opa is a free, open-source programming language that supports multiple paradigms, including functional and imperative programming. It was influenced by OCaml and is known for its strong and static typing, making it a versatile tool for developers. The language was first developed in 2011 and has since undergone numerous releases, with its latest version being 1.1.1 from 2014.

## Key Facts
- **Type**: Programming language
- **Inception**: 2011
- **Latest Version**: 1.1.1 (released on March 8, 2014)
- **License**: Distributed under terms allowing free use, study, modification, and redistribution
- **Influenced by**: OCaml
- **Typing Discipline**: Inference typing, strong typing, static typing
- **Programming Paradigms**: Multi-paradigm, functional, imperative
- **Website**: [opalang.org](http://opalang.org/)
- **Source Code Repository**: [GitHub](https://github.com/MLstate/opalang)
- **Related Entities**: Web framework, free software
- **Wikipedia Title**: Opa (programming language)
- **Copyright Status**: Copyrighted
- **Readable/Writable File Format**: Opa file format
- **Sitelink Count**: 9 (Wikipedia articles in multiple languages)

## FAQs
- **What is Opa, and how does it differ from other programming languages?**
  Opa is a multi-paradigm programming language that supports functional and imperative programming. It is influenced by OCaml and is known for its strong and static typing, which sets it apart from more dynamically typed languages.

- **Who developed Opa, and when was it first released?**
  Opa was developed by an open-source community, with its inception dated to 2011. The first version was released in 2011, and the latest stable version, 1.1.1, was released in 2014.

- **What are the key features of Opa?**
  Key features include strong and static typing, support for functional and imperative programming paradigms, and a free software license that allows users to freely run, study, change, and distribute the language.

- **Where can I find the source code for Opa?**
  The source code for Opa is available on GitHub at [https://github.com/MLstate/opalang](https://github.com/MLstate/opalang).

- **What is the latest version of Opa, and when was it released?**
  The latest version of Opa is 1.1.1, released on March 8, 2014. The language has undergone numerous releases since its inception in 2011.

## Why It Matters
Opa plays a significant role in the programming language ecosystem by providing a free, open-source alternative that supports multiple programming paradigms. Its strong and static typing make it a reliable choice for developers who require type safety and performance. The language's influence by OCaml demonstrates its contribution to the functional programming community. Additionally, Opa's free software license ensures that it remains accessible to a wide range of users, fostering an inclusive development environment.

## Notable For
- **Multi-Paradigm Support**: Opa uniquely combines functional and imperative programming paradigms, making it versatile for different types of projects.
- **Strong and Static Typing**: The language's typing discipline ensures type safety and performance, which are critical for large-scale applications.
- **Free Software License**: Opa is distributed under terms that allow users to freely run, study, change, and distribute the language, promoting open-source collaboration.
- **Influence by OCaml**: Opa's relationship with OCaml highlights its contribution to the functional programming community and its adoption of best practices from established languages.

## Body
### Overview
Opa is a programming language that supports multiple paradigms, including functional and imperative programming. It was influenced by OCaml and is known for its strong and static typing, which contributes to its reliability and performance. The language was first developed in 2011 and has since undergone numerous releases, with its latest version being 1.1.1 from 2014.

### Development and Releases
Opa's development began in 2011, with the first version released that year. The language has since seen numerous releases, including version 1.1.1 on March 8, 2014. The source code is available on GitHub, and the language is distributed under a free software license that allows users to freely run, study, change, and distribute it.

### Typing and Paradigms
Opa employs strong and static typing, which ensures type safety and performance. The language supports multi-paradigm programming, including functional and imperative paradigms, making it versatile for different types of projects. This flexibility allows developers to choose the programming style that best suits their needs.

### Influence and Community
Opa is influenced by OCaml, a functional programming language, which demonstrates its contribution to the functional programming community. The language's free software license promotes open-source collaboration, ensuring that it remains accessible to a wide range of users. Opa's website, [opalang.org](http://opalang.org/), serves as a resource for developers and enthusiasts.

### File Formats and Repository
Opa uses the Opa file format for both readable and writable files. The source code repository is hosted on GitHub, and the language has been referenced in various databases and repositories, including Freebase and Repology. This widespread availability contributes to its accessibility and adoption within the developer community.

### Wikipedia and Sitelinks
Opa has a Wikipedia page titled "Opa (programming language)" and is referenced in multiple language editions, including English, Persian, French, Italian, Malayalam, Portuguese, Swedish, Turkish, and Ukrainian. This indicates its recognition and relevance within the programming language community.

## References

1. [Source](https://github.com/MLstate/opalang/blob/master/README.md#license)
2. [Release 1.1.1. 2014](https://github.com/MLstate/opalang/releases/tag/v4308)
3. [Release 1532. 2012](https://github.com/MLstate/opalang/releases/tag/v1532)
4. [Release 1545. 2012](https://github.com/MLstate/opalang/releases/tag/v1545)
5. [Release 1555. 2012](https://github.com/MLstate/opalang/releases/tag/v1555)
6. [Release 1559. 2012](https://github.com/MLstate/opalang/releases/tag/v1559)
7. [Release 1562. 2012](https://github.com/MLstate/opalang/releases/tag/v1562)
8. [Release 1574. 2012](https://github.com/MLstate/opalang/releases/tag/v1574)
9. [Release 1591. 2012](https://github.com/MLstate/opalang/releases/tag/v1591)
10. [Release 1598. 2012](https://github.com/MLstate/opalang/releases/tag/v1598)
11. [Release 1635. 2012](https://github.com/MLstate/opalang/releases/tag/v1635)
12. [Release 1637. 2012](https://github.com/MLstate/opalang/releases/tag/v1637)
13. [Release 1666. 2012](https://github.com/MLstate/opalang/releases/tag/v1666)
14. [Release 1669. 2012](https://github.com/MLstate/opalang/releases/tag/v1669)
15. [Release 1677. 2012](https://github.com/MLstate/opalang/releases/tag/v1677)
16. [Release 1690. 2012](https://github.com/MLstate/opalang/releases/tag/v1690)
17. [Release 1692. 2012](https://github.com/MLstate/opalang/releases/tag/v1692)
18. [Release 1698. 2012](https://github.com/MLstate/opalang/releases/tag/v1698)
19. [Release 1699. 2012](https://github.com/MLstate/opalang/releases/tag/v1699)
20. [Release 1717. 2012](https://github.com/MLstate/opalang/releases/tag/v1717)
21. [Release 1721. 2012](https://github.com/MLstate/opalang/releases/tag/v1721)
22. [Release 1727. 2012](https://github.com/MLstate/opalang/releases/tag/v1727)
23. [Release 1765. 2012](https://github.com/MLstate/opalang/releases/tag/v1765)
24. [Release 1767. 2012](https://github.com/MLstate/opalang/releases/tag/v1767)
25. [Release 1793. 2012](https://github.com/MLstate/opalang/releases/tag/v1793)
26. [Release 1799. 2012](https://github.com/MLstate/opalang/releases/tag/v1799)
27. [Release 1806. 2012](https://github.com/MLstate/opalang/releases/tag/v1806)
28. [Release 1813. 2012](https://github.com/MLstate/opalang/releases/tag/v1813)
29. [Release 1815. 2012](https://github.com/MLstate/opalang/releases/tag/v1815)
30. [Release 1817. 2012](https://github.com/MLstate/opalang/releases/tag/v1817)
31. [Release 1827. 2012](https://github.com/MLstate/opalang/releases/tag/v1827)
32. [Release 1836. 2012](https://github.com/MLstate/opalang/releases/tag/v1836)
33. [Release 1841. 2012](https://github.com/MLstate/opalang/releases/tag/v1841)
34. [Release 1845. 2012](https://github.com/MLstate/opalang/releases/tag/v1845)
35. [Release 1853. 2012](https://github.com/MLstate/opalang/releases/tag/v1853)
36. [Release 1869. 2012](https://github.com/MLstate/opalang/releases/tag/v1869)
37. [Release 1872. 2012](https://github.com/MLstate/opalang/releases/tag/v1872)
38. [Release 1880. 2012](https://github.com/MLstate/opalang/releases/tag/v1880)
39. [Release 1885. 2012](https://github.com/MLstate/opalang/releases/tag/v1885)
40. [Release 1887. 2012](https://github.com/MLstate/opalang/releases/tag/v1887)
41. [Release 1895. 2012](https://github.com/MLstate/opalang/releases/tag/v1895)
42. [Release 1903. 2012](https://github.com/MLstate/opalang/releases/tag/v1903)
43. [Release 2980. 2012](https://github.com/MLstate/opalang/releases/tag/v2980)
44. [Release 2988. 2012](https://github.com/MLstate/opalang/releases/tag/v2988)
45. [Release 3028. 2012](https://github.com/MLstate/opalang/releases/tag/v3028)
46. [Release 3069. 2012](https://github.com/MLstate/opalang/releases/tag/v3069)
47. [Release 3073. 2012](https://github.com/MLstate/opalang/releases/tag/v3073)
48. [Release 3078. 2012](https://github.com/MLstate/opalang/releases/tag/v3078)
49. [Release 3105. 2012](https://github.com/MLstate/opalang/releases/tag/v3105)
50. [Release 3144. 2012](https://github.com/MLstate/opalang/releases/tag/v3144)