How Can I Copy a Slice of Structs into an Interface Slice in Go?

Copying Structs into an Interface Slice

Challenge:

Assigning a slice of structs to a slice of empty interface types can produce compilation errors due to apparent type incompatibility.

Issue:

The code provided attempts to copy a slice of structs []*MyStruct to a slice of empty interfaces []interface{}. However, these types are deemed incompatible, causing the assignment to fail.

Solution:

Unfortunately, there is no direct way to copy a slice of structs into an interface slice without manually copying each element one by one. This is because wrapping a struct in an interface actually requires wrapping it at the memory level.

Explanation:

An interface contains both a pointer to the original type and a descriptor for the type itself. When converting a struct to an interface, the struct is essentially wrapped within the interface.

Therefore, to copy each struct into the interface slice, the individual elements must be copied one at a time, effectively wrapping each struct in an interface.

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