我有一個這樣的嵌套結構：type Project struct { FolderStructure []FolderItem Description string}type FolderItem struct { SubFolderStructure []SubFolderItem Description string}type SubFolderItem struct { SubSubFolderStructure []SubSubFolderItem Description string}type SubSubFolderItem struct { Content string Description string}我想知道如何初始化它，否則invalid memory address or nil pointer dereference會被扔掉。提前致謝！
1 回答
FFIVE
TA貢獻1797條經驗 獲得超6個贊
最簡單的初始化方法是創建多個實例作為變量，然后重用它們將值分配給嵌套結構。
這是工作示例：https ://go.dev/play/p/6p3VFljyqom和下面相同，這只是一種方法，感覺它是最簡單的。
package main
import "fmt"
type Project struct {
FolderStructure []FolderItem
Description string
}
type FolderItem struct {
SubFolderStructure []SubFolderItem
Description string
}
type SubFolderItem struct {
SubSubFolderStructure []SubSubFolderItem
Description string
}
type SubSubFolderItem struct {
Content string
Description string
}
func main() {
ssfi1 := SubSubFolderItem{
"content1",
"description1 - SubSubFolderItem",
}
ssfi2 := SubSubFolderItem{
"content2",
"description2 - SubSubFolderItem",
}
sfi := SubFolderItem{
SubSubFolderStructure: []SubSubFolderItem{ssfi1, ssfi2},
Description: "description 1 - SubFolderItem",
}
fi := FolderItem{
SubFolderStructure: []SubFolderItem{sfi, sfi},
Description: "description 1 - FolderItem",
}
p := Project{
FolderStructure: []FolderItem{fi, fi},
Description: "description 1 - Project",
}
fmt.Println(ssfi1)
fmt.Println(ssfi2)
fmt.Println(sfi)
fmt.Println(fi)
fmt.Println(p)
}
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