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Pharo -The Immersive Programming Experience

I’d like to focus on computer programming in this installment.  Towards this end, I’d like to take a look at Pharo, a software development environment released under the MIT License (similar to GPL, see link below).  Pharo provides a graphical way to utilize the Smalltalk programming language, the programming language used to write Dr. Geo, one of my favorite geometry exploration programs.

phaor logo,energize education
The Pharo logo

First of all, Pharo’s development team refers to Pharo as an “immersive programming environment.” What does this mean? Dictionary.com defines immersive as an adjective “noting or pertaining to digital technology or images that deeply involve one’s senses and may create an altered mental state.” Techopedia defines a programming environment as “a collection of procedures and tools for developing, testing and debugging an application or program.” Another name for such an environment is Integrated Development Environment or IDE. What this means is that Pharo provides a graphical interface for Smalltalk that is so intuitive, full-featured and graceful that it allows you to code without getting in the way.

Before I go further, I’d like to share a few things from Pharo’s mission statement.  The Pharo team seeks to provide an accessible and innovative free, open source programming environment.  These people strive to keep Pharo small, stable and equipped with excellent tools key for software development.  Finally, Pharo seeks to foster a healthy ecosystem of contributors who strive to maintain and enhance this application.

pharo, energize educaton through open source
Pharo at work.

Smalltalk is an object-oriented programming language, which, in layman’s terms means that it focuses more on objects and data rather than on commands, or actions, and logic.  Keeping this in mind, Pharo is designed to be very straightforward to use and to provide prompt feedback.  Pharo also includes an IDE (Integrated Development Environment), from which it draws its simplicity.  Furthermore, Pharo offers a high level of diversity through a large library and a set of external applications.  Pharo also includes strong support for business use in the form of organizations, such as the Pharo Industrial Consortium and an association of users, the Pharo Association.

pharo,energize education
Pharo works its magic.

I’d like to take a look at Pharo’s interface as this is key to Pharo’s ease of use.  How often have you launched a new program with some trepidation, wondering with what will I be presented?  How intuitive will the interface be?  How long will it take me to figure out how to make this thing do what I need it to do?  Arguably, Pharo’s interface, or lack thereof, is not just one of its strengths.  It’s also aesthetically appealing.  No need for a menu bar or tool bar, as Pharo relies on context-sensitive menus for its functionally.  Simply click in the main window to open the World Menu, which is a general menu, from which you can select Workspace.  A Workspace is like an artist’s sketchpad upon which you create your application.  Once a Workspace has been opened, you can use contextual menus to perform desired tasks.

So, what’s the best thing about Pharo?  It could be that it is free to download.  It could be the number of free books about Pharo available online.  It could also be the extensive support community.  I leave it to you, the reader, to download and install Pharo.  Then start using it and find out for yourself what you think is the best thing about Pharo.

Pharo is available for Microsoft Windows, Apple MacOS and GNU/Linux.


The MIT License

Pharo Website


Thanks to the people at Pharo for permission to use their screenshots for this article.

Black, A.P., Ducasse, S., Nierstrasz, O., Pollet, D., Cassou, D. & Denker, M.  (2009). Pharo by example.  Switzerland: Square Bracket Associates.  Retrieved http://pharobyexample.org/versions/PBE1-2009-10-28.pdf

Immersive. (n.d.). In Dictionary.com. Retrieved from http://dictionary.reference.com/browse/immersive?s=t

Pharo [computer software].  (n.d.).  GNU General Public License.

programming environment. (n.d.). Techopedia. Retrieved from https://www.techopedia.com/definition/16376/development-environment