I-expressions is a data notation created in 2003 by Egil Möller.
|#1205on PLDB||20Years Old|
This SRFI descibes a new syntax for Scheme, called I-expressions, whith equal descriptive power as S-expressions. The syntax uses indentation to group expressions, and has no special cases for semantic constructs of the language. It can be used both for program and data input.
define fac x if = x 0 1 * x fac - x 1 let group foo + 1 2 bar + 3 4 + foo bar