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# Lisp For Schemers
## iota
### In Scheme
```
scheme@(guile-user)> (iota 12)
$1 = (0 1 2 3 4 5 6 7 8 9 10 11)
```
### In Common Lisp
```
CL-USER: (loop for i below 12 collect i)
(0 1 2 3 4 5 6 7 8 9 10 11)
CL-USER: (macroexpand '(loop for i below 12 collect i))
(BLOCK NIL
(LET ((I 0))
(DECLARE (IGNORABLE I)
(TYPE (AND NUMBER REAL) I))
(SB-LOOP::WITH-LOOP-LIST-COLLECTION-HEAD (#:LOOP-LIST-HEAD-493
#:LOOP-LIST-TAIL-494)
(TAGBODY
SB-LOOP::NEXT-LOOP
(WHEN (>= I '12) (GO SB-LOOP::END-LOOP))
(SB-LOOP::LOOP-COLLECT-RPLACD
(#:LOOP-LIST-HEAD-493 #:LOOP-LIST-TAIL-494) (LIST I))
(SB-LOOP::LOOP-DESETQ I (1+ I))
(GO SB-LOOP::NEXT-LOOP)
SB-LOOP::END-LOOP
(RETURN-FROM NIL
(SB-LOOP::LOOP-COLLECT-ANSWER #:LOOP-LIST-HEAD-493))))))
T
```
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