F# take subsequence of a sequence

问题

I need to define a function, which takes a sequence and integers i and n as parameters and returns sub list or sub sequence of this seq, defined as followed:

.

回答1:

You can write:

let subSeq i n = Seq.skip i >> Seq.take n

Which is used, e.g.:

let result = subSeq 5 10 [0..20]

来源：https://stackoverflow.com/questions/34093543/f-take-subsequence-of-a-sequence