(zuplo.com)

299 points DataOverload | 2 comments | 17 Oct 24 17:46 UTC | HN request time: 2.135s | source

1. quietbritishjim ◴[18 Oct 24 19:17 UTC] No.41882563[source]▶

> Strengths: ... Idempotency: JSON Patch operations can be safely retried without causing unintended side effects.

So, wait, you can't add an item to an array with this (except at a predefined position)? I.e. "add" with path "/.../myarray/~" (if I've understand their notation right) isn't allowed?

I'm not sure if that's good or bad, but it's certainly surprising and could do with saying a bit more explicitly.

replies(1): >>41886622 #

2. uzerfcwn ◴[19 Oct 24 09:05 UTC] No.41886622[source]▶

>>41882563 (TP) #

You can add to the end of an array by using the path /.../myarray/-, i.e., the index is replaced by a dash.

JSON patch is indeed not idempotent.

↑