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Set JSON NullValueHandling to Ignore by default #4284

khellang opened this issue Mar 14, 2016 · 2 comments


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commented Mar 14, 2016

From #4283:

I'd like to propose setting NullValueHandling to Ignore by default. It's just a waste of bytes, IMO.

I assume that a high percentage of JSON returned from an API is consumed by JavaScript, where both null and undefined are falsy, so if (json.someProperty) { /* do something */ } would have the same results, whether the property is null or just absent.

It should also be no problem if the consumer is using Newtonsoft.Json, where MissingMemberHandling is set to Ignore by default. This would simply set missing properties to default(T).


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commented Mar 14, 2016

Agreed. Another annoyance that I constantly have to override.

@Eilon Eilon added this to the Backlog milestone May 26, 2016


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commented May 26, 2016

We discussed at length with @danroth27 and also @JamesNK and ultimately concluded that we feel this isn't an entirely safe change to make. The concern is that for some scenarios there is a significant difference between a key that is present, but with a null value, and no key at all. While it's certainly nice to trim down on the size of the serialized data, this carries with it a significant semantic change, and it's one that we feel is too risky to make in the general case.

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