Pharo
 | |
 | |
| Developer | Pharo community |
|---|---|
| First appeared | 2008 |
| Stable release | 5.0
/ May 12, 2016 |
| Implementation language | Smalltalk |
| OS | Windows, Linux, Mac OS X, others |
| License | MIT license, partially Apache License 2.0[1] |
| Website | pharo |
| Influenced by | |
| Smalltalk (Squeak) | |
Pharo is an open source implementation of the programming language and environment Smalltalk. Pharo offers strong live programming features such as immediate object manipulation, live update, and hot recompilation. The live programming environment is at the heart of the system.
Introduction
Pharos is a Greek word (Φάρος) which means lighthouse. The Pharo logo shows a drawing of a lighthouse inside the final letter O of the name.
History
Pharo emerged as a fork of Squeak, an open source Smalltalk environment created by the Smalltalk-80 team (Dan Ingalls and Alan Kay). It focuses on modern software engineering and development techniques.[citation needed] Pharo is supported by the Pharo consortium (for companies) and the Pharo association (for users).
- Fork of Squeak environment in 2008.
- Pharo 1.0 was released April 15, 2010.
- Pharo 1.1 was released July 26, 2010.
- Pharo 1.2 was released March 29, 2011.
- Pharo 1.3 was released in August 2011.
- Pharo 1.4 was released in April 2012.[3]
- Pharo 2.0 was released March 18, 2013.[4]
- Pharo 3.0 was released in April 2014.[5]
- Pharo 4.0 was released in April 2015.[6]
- Pharo 5.0 was released in May 2016. [7]
Use of Pharo
Companies and consultants
Some companies use Pharo for their development projects.[8] In particular, they use:
- Seaside for dynamic web development[9]
- Zinc for server architectures[10]
- Moose[11] to analyse data and software from all programming languages
- Graphic libraries for evolved user interfaces
- Roassal to visualize data
The Pharo consortium[12] was recently created for companies wishing to support the Pharo project. The Pharo association[13] was recently created for users wishing to support the project.
Performance and virtual machine (VM)
Pharo relies on a virtual machine that is written almost entirely in Smalltalk itself. Beginning in 2008, a new virtual machine (Cog) for Squeak, Pharo and Newspeak has been developed that has a level of performance close to the fastest Smalltalk virtual machine.[14] In 2014/2015 the VM community is working on Spur, a new Memory Manager for Cog that should again increase performance and provide better 64-bit VM support.[15]
See also
References
- ^ Pharo license information
- ^ The Pharo board
- ^ "Pharo Open Source Smalltalk — Release 1.4". Pharo-project.org. April 17, 2012. Retrieved April 5, 2013.
- ^ "Pharo Open Source Smalltalk — Release 2.0". Pharo-project.org. March 18, 2013. Retrieved April 5, 2013.
- ^ "Pharo Open Source Smalltalk — Release 3.0". pharo.org. April 30, 2014.
- ^ "Pharo Open Source Smalltalk — Release 4.0". pharo.org. April 15, 2015.
- ^ "Pharo Open Source Smalltalk — Release 5.0". pharo.org. May 12, 2016.
- ^ "(Press Release) Pharo Open Source Smalltalk — Success stories". Pharo-project.org. Retrieved April 5, 2013.
- ^ "Home". seaside.st. March 18, 2007. Retrieved April 5, 2013.
- ^ "Zinc HTTP Components". Zn.stfx.eu. Retrieved April 5, 2013.
- ^ Girba, Tudor. "Home". Moose technology. Retrieved April 5, 2013.
- ^ "web: Pharo Consortium". Consortium.pharo.org. March 31, 2013. Retrieved April 5, 2013.
- ^ Ducasse, Stephane. "association: Pharo Association". Association.pharo.org. Retrieved April 5, 2013.
- ^ "Cog Blog". Mirandabanda.org. Retrieved April 5, 2013.
- ^ "7-point summary of the Spur memory manager". Clément Béra. Retrieved April 17, 2015.