I-expressions - Data notation

I-expressions is a data notation created in 2003 by Egil Möller.

#2182on PLDB

21Years Old

Example from the web:

define
  fac x
  if
   = x 0
   1
   * x
     fac
      - x 1
 let
  group
   foo
    + 1 2
   bar
    + 3 4
  + foo bar

Language features

Feature	Supported	Token	Example
Semantic Indentation	✓