Map

// expect: map[string]interface{}{"111": "cvt", "222": 3.21}
cvt.StringMapE(map[interface{}]interface{}{111: "cvt", "222": 3.21})

// expect: map[string]interface{}{"Name": "cvt", "Age": 3}
cvt.StringMapE(struct {
    Name string
    Age  int
}{"cvt", 3})

// expect: map[string]interface{}{"name": "cvt", "age": 3.21}
cvt.StringMapE(`{"name":"cvt","age":3.21}`)