Pharo is an expressive, extensible, dynamically typed and highly reflective scripting language that is inspired from the Smalltalk programming language. Pharo provides a number of live programming capabilities like instant object updates, live code compilation and immediate interactive debugging.
Pharo programming has a rich set of syntax and constructs to facilitate both developers and users. Pharo has a very flexible syntax which can easily accommodate different kinds of programming languages. Unlike most scripting languages, Pharo supports the full range of meta-programming facilities. It has a strongly-typed data type system and a strong typing model. Pharo also provides support for the Java virtual machine, the C++11 standard library, and the PHP scripting language.
The Pharo language has some notable advantages over others. First, it is highly expressive; this feature helps the user to express complex programs. Second, it makes it easy for the programmer to extend the syntax and the scope of a program. Third, it provides the programmers with the ability to choose between different compile-time options.
Many organizations and individuals are developing Pharo applications. There are a number of open source project’s using the Pharo language. Some of these include Phoenix, Eclipse, CodeSourcery, NetBeans, QGIS, and OpenCV. Open Source projects are developed using Pharo’s Open Source License, while those developed by organizations are under the commercial licenses.
For companies who wish to develop applications from scratch, open source is a good option. Although it might take a longer time to get a project running, it is very cost effective and allows the company to save on cost and resources. However, open source does have its disadvantages.
When developing an application with open source, the software is not supported by the manufacturer will not provide any guarantees. The Open source is often used for applications, not on hardware devices, like the mobile devices. However, the developers may expect the manufacturers to provide some technical support. Some companies use open source to develop applications that have some pre-written scripts that help the programmers in writing an application. This is called the open scripting language model.
In addition, Pharo uses a lot of macros and templates and therefore, the program is easier to understand. Another advantage is that it is used for large projects that involve many users, such as web sites and desktop applications. The programming language is quite versatile.
Pharo supports several programming modes: the procedural mode, the functional mode, and the meta-mode. In the procedural mode, the programmer writes the code on the command line and then it is compiled on the target machine. In the functional mode, the programmer defines the procedures as well as data types of expressions. In the meta-mode, there is only one mode for all the operations, so that the programmer can work on each operation at the same time without worrying about the results.
The Pharo language provides some interesting features, for example, it has some built-in features that make it easy for the programmers to use. Other features include the ability to implement various optimization strategies. such as the SIMD or SIMBL, as well as the ability to define functions as first class citizens. classes.
In addition, Pharo is an Open Source technology. This means that the programmers are allowed to use the Pharo language to develop commercially.
Although there is no licensing charge, some software companies charge a fee for publishing Pharo. However, the price varies from one product to another. Most of the software is free to download. A number of the best Pharo programmers are currently working in the commercial sector.