by michael.elkins:

In the "Effective Go" document in the section describing the "switch"
command, the following code excerpt is used:

switch t := interfaceValue.(type) {
default:
    fmt.Printf("unexpected type %T", type);  // %T prints type

This code does not compile.  I believe that last line should be:

    fmt.Printf("unexpected type %T", t);  // %T prints type