go - `append` complexity

Question

What is the computational complexity of this loop in the Go programming language?

var a []int
for i := 0 ; i < n ; i++ {
  a = append(a, i)
}

Does append operate in linear time (reallocating memory and copying everything on each append), or in amortized constant time (like the way vector classes in many languages are implemnted)?

Answer 1

Waitting for answers