Langage fonctionnel
Manipulations de listes

compr:cartesian ([a,b], [x,y]).

Eshell V5.0.2.11  (abort with ^G)
1> [{a,x},{a,y},{b,x},{b,y}]
2> 

integer_to_list (5).
count:count (integer_to_list (fact:fact (90))).

Eshell V5.0.2.11  (abort with ^G)
1> "5"
2> 139
3>