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encoding/json: Proposal - Flexible omitempty #45787

PumpkinSeed opened this issue Apr 26, 2021 · 1 comment

encoding/json: Proposal - Flexible omitempty #45787

PumpkinSeed opened this issue Apr 26, 2021 · 1 comment


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Questions unrelated.

I run into the issue where I wanted to omitempty a non-pointer struct. I couldn't make it happen properly so I think about a solution. So this is the code running I guess when there is the omitempty tag on the field. What if it would check for an extra interface implementation where we can flexibly determine when we consider a non-pointer struct as empty?

So use-case in this playground. It seems that the empty struct marshalled into the JSON. But if the Go has an interface like below I can implement this and the linked source can look for that implementation. If no any implementation than go with the default.

type Something interface {
  IsEmpty() bool
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Dup of #32675, see discussion at #11939.

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