Mastodawn

bleistift2 Jun 30, 2024

Trying to understand JSON…

Trying to understand JSON… - Sopuli

Meme transcription: Panel 1. Two images of JSON, one is the empty object, one is an object in which the key name maps to the value null. Caption: “Corporate needs you to find the difference between this picture and this picture” Panel 2. The Java backend dev answers, “They’re the same picture.”

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MostlyBlindGamer Jun 30, 2024

Thanks for the transcription!

Surely Java can tell the difference between a key with a null value and the absence of that key, no?

I mean, you can set up your deserialization to handle nulls in different ways, but a string to object dictionary would capture this, right?

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Lysergid

Kinda, I guess we all can agree it’s more typical to deserialize into POJO where theres is no such thing as missing field. This great precondition for various stupid hacks to achieve „patching” resources, like blank strings or negative numbers for positive-only fields or even Optional as a field.