- vector-length vecprocedure
[R7RS-small] Returns the length of vec, the number of locations reachable from vec. (The careful word 'reachable' is used to allow for 'vector slices,' whereby vec refers to a larger vector that contains more locations that are unreachable from vec. This SRFI does not define vector slices, but later SRFIs may.)
Example:
(vector-length '#(a b c)) ;=> 3