I use encoding/jsonto serialize struct. I'm confused about the output of json.Marshal function. Does the serialized field content strictly follow the order in the struct definition?
e.g. Here is a struct definition
type MyStruct struct {
Field1 string
Field2 string
}
could the output be {"Field2":"field2","Field1":"field1"}? Since if the output struct fields out of order, the hash of the serialized content will be uncertain.
分享 The current implementation is deterministic, e.g. for structs see https://golang.org/src/encoding/json/encode.go#L629 which gives struct order (and maps are by sorted keys).
But as this is not guaranteed by the documentation you should consider this an implementation detail.
If you want to hash the output you'll face more problems, e.g. there are several equivalent representations of characters in strings and JSON has no notion of an int (floats only). It really depends on what you try to do wirh that hash.
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