x <- list(p1 = list(type="A",score=list(c1=10,c2=8)),
p2 = list(type="B",score=list(c1=9,c2=9)),
p3 = list(type="B",score=list(c1=9,c2=7)))
list.select(x,type)
list.select(x,tp=type)
list.select(x,type,score)
list.select(x,type,score.range=range(unlist(score)))Run the code above in your browser using DataLab