对R中的列表进行排序：根据其他列表的值对一个列表的值进行排序

Question

我需要对列表列表进行排序的帮助。 假设我列出了以下孩子：

a <- list(name = "Ann", age = 9)
b <- list(name = "Bobby", age = 17)
c <- list(name = "Alex", age = 6)

my.list <- list(a, b, c)

我想按年龄对他们的名字进行排序，因此请收到以下信息：

> "Alex" "Ann" "Bobby"

Answer 1

a <- list(name = "Ann", age = 9)
b <- list(name = "Bobby", age = 17)
c <- list(name = "Alex", age = 6)

L <- list(a,b,c)
ages <- sapply(L,"[[","age")
names <- sapply(L,"[[","name")
names[order(ages)]