Lingo Language

The Lingo language is based on the Smalltalk language with Algol-like extensions. Lingo consists of an environment which runs exclusively on the Rekursiv. system and has a windowed user interface similar to the Smalltalk environment. An example code fragment of Lingo and Smalltalk is shown below for comparison. Lingo factorial example:

      n factorial [ i x ] if n = 0 then 1 else
      {
	 i := n - 1;
	 x := n;
	 while i > 0 do
	 {
		x := x * i;
		i := i - 1;
         
	 -> x
      }.

Smalltalk factorial example:

	factorial
	
	self > 0
                    ifTrue: [^self * (self - 1) factorial].

        self = 0
                    ifTrue: [^1].

        self error: 'factorial invalid for: ' , self printString

There is little documentation available for Lingo, however, a book describing Lingo was due to be published by the summer of 1990. The book was never published.

Gary Whittington - Modified: 1994.06.20 - ERG home page