How to Resolve Duplicate Field Issues When Embedding Same-Named Structs?

Overcoming Duplicate Field Issues When Embedding Two Same-Named Structs

Embedding multiple types with the same name within a single struct can result in a duplicate field issue. This is evident when trying to embed both an SQL store and a file store within a datastore struct, leading to a redundant "Store" field.

Alternative Approach: Type Alias

To resolve this conflict, consider using a type alias. This involves creating a new name for the embedded type, effectively creating an alternate spelling for the original type.

For instance, in the provided example, you could define a type alias called "SqlStore" to represent the SQL store:

<code class="go">type SqlStore = sql.Store</code>

Once the alias is established, the datastore struct can embed "SqlStore" along with the fileStore:

<code class="go">type datastore struct {
    *SqlStore
    *file.Store
}</code>

By utilizing a type alias, the conflicting field names are avoided, as the alias creates a distinct spelling for the embedded SQL store type, resolving the duplicate field issue.

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