listextr

Extract a sublist from a list between two indices

Prototype :

fun [[u0 r1] I I] [u0 r1]

[u0 r1] : any list (level 1)
I : first indice. Can be negative.
I : second indice. Can be negative.

Return : the sub list, or nil if error

Example :

fun main ()=
	_showconsole;

	_fooIList listextr 0::1::2::3::4::5::6::7::nil (-5) 4;	// 2:3:4:NIL
	_fooSList listextr "0"::"1"::"2"::"3"::"4"::"5"::"6"::"7"::nil 2 4;	// 2:3:4:NIL
	0;;