摘要: Examples: print(match(5, c(1,2,9,5,3,6,7,4,5)))[1] 4 5 %in% c(1,2,9,5,3,6,7,4,5)[1] TRUE 8 %in% c(1,2,9,5,3,6,7,4,5)[1] FALSE > v1 <- c("a1","b2","c1"阅读全文
posted @ 2018-04-28 04:27 emanlee 阅读(14) 评论(0) 编辑