| Paradigm(s) | procedural |
|---|---|
| Appeared in | 1980s |
| Designed by | Snorri Agnarsson |
| Typing discipline | strong, dynamic |
| Scope | lexical |
| Usual filename extensions | .fjo |
Fjölnir (also Fjolnir or Fjoelnir) is a programming language developed by professor Snorri Agnarsson of computer science at Háskóli Íslands that was mostly used in the 1980s. The source files usually have the extension fjo.
Contents |
Fjölnir is based on the concept of representing programs as trees, and packages by substitutions on trees using algebraic operators.[1] For example, in the Hello World example below, "GRUNNUR" is a package, the block of code between braces is a package, and * is an operator that substitutes names in one package with elements from another. In this case, skrifastreng (which writes a string to the standard output) is imported from "GRUNNUR".
;; Hello world in Fjölnir
"hello" < main
{
main ->
stef(;)
stofn
skrifastreng(;"Hello, world!"),
stofnlok
}
*
"GRUNNUR"
;