如何在Go中实现可调整大小的数组

Question

I come from a C++ background and I'm used to using the std::vector class for things like this. Lets assume I want a dynamic array of these:

type a struct {
    b int
    c string
}

What is the standard way of doing this?

A snippet would be very useful

Answer 1

Use the append() builtin

Example:

type mytype struct {
  a, b int
}

func main() {
  a := []mytype{mytype{1, 2}, mytype{3, 4}}
  a = append(a, mytype{5, 6})
}

Refer to the spec for more info on append.