Why Does My Go Code Throw a 'Cannot Assign m2 to Map[interface{}]interface{}' Error?

How to Resolve the "Cannot Assign m2 to Map[interface{}]interface{}" Error

In your code, you have encountered an error related to type compatibility between a map used in the Keys function and the map you are trying to access:

cannot use m2 (type map[int]interface {}) as type map[interface {}]interface {} in argument to Keys

To resolve this, you should keep in mind the following:

Golang's Type System and Generics

• Golang is a statically typed language, meaning that it requires explicit type definitions.
• Golang does not support generics, so you cannot define a function with generic types.

Type Compatibility

In your code, the Keys function is defined to work with a map of type map[interface{}]interface{}, while you are using a map of type map[int]interface{}. These types are not compatible because the key types are different.

Options for Resolution

There are several ways to resolve this issue:

Option 1: Modify the Keys Function

1. Change the function definition to accept a map of type map[int]interface{}:

func Keys(m map[int]interface{}) []interface{} {
    // Implement function
}

Option 2: Modify the Map

1. Change the type of your map to map[interface{}]interface{}:

m2 := map[interface{}]interface{}{
    2: "string",
    3: "int",
}

Option 3: Use Reflection (Not Recommended)

1. Use the reflect package to access the map keys. However, this approach comes with performance penalties.

Remember, type compatibility is crucial in Golang. Ensure that the types in your code match the expected types to avoid such errors.

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