How to Access Anonymous Struct Values Within an `interface{}` in Golang?

Accessing Anonymous Struct Values in Golang Type Interface {}

You're facing an issue accessing the anonymous struct you passed to the NewJob function from within the Custom function. The error you're encountering, "interface {} is interface with no methods," indicates that the interface{} type you're working with has no defined methods, making it impossible to access fields directly.

To resolve this, you need to type assert the interface{} value to a compatible type, such as the anonymous struct your data belongs to. Doing so allows you to access the field you desire. Here's the adjusted code:

<code class="go">func Custom(name string) interface{} {
    for i := range jobs {
        if jobs[i].name != name {
            continue
        }
        return jobs[i].custom
    }
    return nil
}

...

id := t.(struct{Id int}).Id</code>

In the above code, we type assert t to a struct with a field named Id. This allows us to access the Id field directly, now returning the expected result of 1.

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