where is the difference lies???

[Gyan Shanker]

When i type number? it shows
#<primitive:number?>

but when i type list-ref? it shows an error?

is it this case that list-ref is not a pre defined function or
identifier in scheme?

[Venkatesh Choppella]

Hello Gyan Shanker,

The name of the scheme primitive is 'list-ref', not 'list-ref?'

Typing list-ref? on the scheme prompt gives you an error because the
identifier list-ref? is not bound at top-level.

Best.
- venkatesh

--
Venkatesh Choppella, PhD.
Associate Professor
Indian Inst. of Info. Tech. & Mgmt -- Kerala
Park Centre, Technopark, Kariavottam P.O.
Trivandrum, Kerala 695 581, INDIA
home: http://www.iiitmk.ac.in/~choppell
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