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Trying to understand JSON…(sopuli.xyz)

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bleistift2@sopuli.xyz
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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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Gamma@beehaw.org
1 point

That’s what undefined is for

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bleistift2@sopuli.xyzOP
4 points

To be fair, just because obj.foo is undefined, that doesn’t mean the key is missing. It could also be assigned the value undefined. const obj = { foo: undefined } vs const obj = {}

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magic_lobster_party@kbin.run
5 points

Undefined is not part of JSON specification. It’s also not a thing in Java.

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Gamma@beehaw.org
1 point

Yeah my bad, it would still require the java dev to leave the keys out

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