R在Python中是否具有与reduce()相当的东西？

Question

即:"将两个参数的函数累加到序列项中,从左到右,以便将序列减少为单个值."

Answer 1

是的,它被称为Reduce.

一个例子:

Reduce(paste, LETTERS[1:5])
[1] "A B C D E"

Reduce(sum, 1:5)
[1] 15

#List arguments work the same
Reduce(sum, list(1, 2, 3, 4, 5))
[1] 15

有关R中函数式编程的更多信息,请参阅帮助文件?funprog,其别名为?Reduce