Specifying a default value for a member of a struct

[tronical]

Discussed in #4738

^{Originally posted by mitchgrout March 3, 2024}
As I understand, if a member of a struct is not explicitly initialized, it will be set to its default value. However, as far as I can tell there is no way to set a new default value for a member, as the following is illegal:

export struct Test {
  value: int = 42
}

My take is that the default value for some types, including user-defined types, might not always be desirable. For example, I might want to have export enum Accidental { flat, neutral, sharp }. However, if I used this within a struct and forgot to explicitly initialize the field, then it would default to flat as it is the first element in the enum. My preference however would be that it should be neutral.

Of course, I could resolve this by re-ordering my enum, but it feels as though there should be some flexibility here?

[ogoffart]

Closing as duplicate of #2936