golang结构数组转换

Question

I have structs like below:

type Foo struct{
  A string
  B string
}

type Bar struct{
  C string
  D Baz
}

type Baz struct{
  E string
  F string
}

Lets say I have []Bar, how to convert this to []Foo ?

A should be C

B should be E

Answer 1

I don't think there's any "magic" way of doing the conversion. However, it is a very small piece of coding to create it. Something like this ought to do the trick.

func BarsToFoos(bs []Bar) []Foo {
  var acc []Foo

  for _, b := range bs {
    newFoo := Foo{A: b.C, B: b.D.E}  // pulled out for clarity
    acc = append(acc, newFoo)
  }

  return acc
}