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。”
Yes, it's called Reduce
.
An example:
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
For more information about functional programming in R see the help file for ?funprog
, an alias for ?Reduce
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