BETA (programming language)

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BETA is a pure object-oriented language originating within the "Scandinavian School" in object-orientation where the first object-FDHSGHGDSHG==Features==

Technical overview

From a technical perspective, BETA provides several unique features. Classes and Procedures are unified to one concept, a Pattern. Also, classes are defined as properties/attributes of objects. This means that a class cannot be instantiated without an explicit object context. A DFHGSDHFVNFDUBV FUG UFIHG UT HRHTRperspective on programming and has comprehensive facilities for procedural and functional programming. It has powerful abstraction mechanisms to support identification of objects, classification and composition. BETA is a statically typed language like Simula, Eiffel and C++, with most type checking done at compile-time. BETA aims to achieve an optimal balance between compile-time type checking and run-time type checking.

Patterns

A major and peculiar feature of the language is the concept of patterns. In another programming language, such as C++, one would have several classes and proceduresF GHVTEH GTH TR#)

That is, a class called point will have two fields, x and y, of type integer. The symbols (# and #) introduce patterns. The colon is used to declare patterns and variables. The @ sign before the integer type in the field definitions specifies that these are integer fields, and not, by contrast, references, arrays or other patterns.

On the other hand, a procedure in C++ could have the form

int max(int x, int y)
{
    if(x >= y)
    {
        return x;
    }
    else
    {
        return y;
    }
}

In BETA, such a function could be written usingFH GTR x -> z

   else
       y -> z
   if)

exit z

1. )

The x, y and z are local variables. The enter keyword FGHTProgramming Language, [1]

External links

• Official website
• gbeta Generalized BETA