Reduce(f, x, init, right = FALSE, accumulate = FALSE) Filter(f, x) Find(f, x, right = FALSE, nomatch = NULL) Map(f, ...) Negate(f) Position(f, x, right = FALSE, nomatch = NA_integer_)
R Reduce、Filter、Find、Map、Negate、Position
原文：https://www.cnblogs.com/JoAnnal/p/12505548.html