zakisplains.md

Unmarshal/deserialize

val := types.MustUnmarshalValidator(cdc, res)

Now this is a very common construct in Go.

It consists of 3 key pieces

A codec object: cdc

A serialized data: res

And a helper function:types.MustUnmarshalValidator

The code below is functionally identical to the code above.

var val Validator

err = cdc.UnmarshalBinaryLengthPrefixed(res, &validator)

if err != nil{
   panic(err)
}

The codec object knows how to convert bytes to the types in cosmos-SDK

If the codec does not recognize the target receiver objects of validator is matches the bytes. Ie. You can turn the res bytes into a validator struct safety. It will error and then the error handler will panic