Selecting an Indexed Element from a List (nthelem)
nthelem returns an indexed element of a list, assuming a one-based index. Thus
nthelem(1 l_list) is the same as car(l_list).
nthelem( 1 '( a b c ) ) => a
z = '( 1 2 3 )
nthelem( 2 z ) => 2作者: xipanlong 时间: 2012-7-19 22:32
学习了,看来我也要基础学习了作者: szhot 时间: 2012-7-20 00:07
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