go-embedded-struct

what is embedded struct in Go

tags: learning go programming

content

• i see this from static analysis on this line of code: m.renderer.ViewRange.LastRowIndex

could remove embedded field "ViewRange" from selector 

• this is ViewRange is an embedded struct
• it’s defined by something like this:

type ViewRange struct {
	// some fields here
	LastRowIndex int
}
type Renderer struct {
	// some fields here
	ViewRange
}

• NOTE: ViewRange in Renderer does NOT have a field name
• this is an embedded struct
• all of embedded struct’s fields is promoted to its parent
• so, in order to access LastRowIndex
  • instead of

m.renderer.ViewRange.LastRowIndex

• we can have:

m.renderer.LastRowIndex

up

• go-struct

down

reference