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Add omitzero tag. #98

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Merged
merged 2 commits into from
Jun 6, 2025
Merged

Add omitzero tag. #98

merged 2 commits into from
Jun 6, 2025

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Crystalix007
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Adds an omitzero tag to allow "zero values" according to the Go language spec to be ignored.

The important distinction between this and omitempty is for slices and maps - where currently there is no good way to make the following code sample do something different depending upon whether the opt1 option is specified (as a zero-length slice) or nil:

type options struct {
	opt1 []string
}

func foo(opts options) {
	// ...
}
@Crystalix007
docs: improve omitempty documentation.
9c2eaae 
Improves the documentation of the existing `omitempty` struct tag, as it
relates to nil and empty slices.
@Crystalix007
feat: add omitzero struct tag.
21da843 
Adds a tag for omitting zero-valued elements, such as nil slices and
maps. This enables a bit more fine-grained control over whether a slice
will be copied across (by explicitly choosing to set as nil or
zero-length).
@sagikazarmark sagikazarmark added the enhancement New feature or request label Jun 6, 2025
sagikazarmark
sagikazarmark approved these changes Jun 6, 2025
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This is awesome!

Thanks a lot!
@sagikazarmark sagikazarmark merged commit 1a66224 into go-viper:main Jun 6, 2025
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@nokibsarkar nokibsarkar mentioned this pull request Jun 27, 2025
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enhancement New feature or request
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@Crystalix007 @sagikazarmark