Why io.in(i) can be indexed by this i?

[davidmlw]

XiangShan/src/main/scala/xiangshan/backend/dispatch/Dispatch2Rs.scala

Line 120 in a788562

io.out(i) <> io.in(i)

For this module, the io.out and io.in has different length, io.out is Vec of length numOut = configs.length, while io.in is a Vec of length of numIn.

Why io.in(i) is not out of bound?