Why Does GoLand Show 'Unresolved Reference' Errors Despite Correct Code Compilation and Execution?

Unresolved Reference Error in GoLand: A Fix

In GoLand IDE, developers may encounter an "unresolved reference" error despite the program compiling and running correctly. This issue often arises while modifying code retrieved from a remote server.

One effective solution to this problem is to navigate to File -> Invalidate Caches / Restart. This action refreshes GoLand's caches and often resolves the "unresolved reference" error.

To illustrate, consider the following code:

package main

import (
    "fmt"
)

type MyBoxItem struct {
    Name string
}

type MyBox struct {
    Items []MyBoxItem
}

func (box *MyBox) AddItem(item MyBoxItem) {
    box.Items = append(box.Items, item)
}

func main() {

    item1 := MyBoxItem{Name: "Test Item 1"}
    item2 := MyBoxItem{Name: "Test Item 2"}

    box := MyBox{}

    box.AddItem(item1)
    box.AddItem(item2)

    // checking the output
    fmt.Println(len(box.Items))
    fmt.Println(box.Items)
}

In GoLand, the AddItem method may be marked as an "unresolved reference" error, even though the code compiles and runs without issues. In such cases, going to File -> Invalidate Caches / Restart should resolve the error.

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