Nyquist / XLISP 2.0  - 
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nth
  | Type: | - | function (subr) | 
  | Source: | - | xllist.c | 
Syntax
- (nth expr list-expr)
- expr - an integer expression
 list-expr - a list or list expression
 returns - the nth element or NIL if the
list isn't that long
Description
'nth' returns the 'expr'-th element of 'list-expr'. If the 'list-expr' is
shorter than 'expr', a NIL is returned. The
counting sequence is base zero, the first element is the 0th element.
Examples
(nth 4 '(0 1 2 3 4 5 6))  ; returns 4
(nth 3 '(a b))            ; returns NIL
(nth 4 'a)                ; error: bad argument type
(nth 3 "abcdefg")         ; error: bad argument type
See the
nth
function in the XLISP 2.0 manual.
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Nyquist / XLISP 2.0  - 
Contents |
Tutorials |
Examples |
Reference