JSON Schema existed in 2018, so if needed, JSON isn't fully schemaless.

bvrmn · on Nov 28, 2020

JSON Schema doesn't prevent meta repetition and has no sense in the topic's context.

avmich · on Nov 28, 2020

I'm not sure I understand what meta repetition is, but JSON Schema is a schema mechanism for JSON. _A_ schema mechanism. Maybe author meant something else, but, well, that's how it's called - and arguably it's a good name.

otabdeveloper4 · on Nov 28, 2020

This JSON

    [ {"foo": 1.2, "bar": [1,2]},
      {"foo": 3.4, "bar": []},
      {"foo": 5.6, "bar": [10,11,12] ]

could be shortened to

    [ { foo: real, bar: [ int ] ]
    1.2 1 2; 3.4 ; 5.6 10 11 12;;

which is significantly shorter and also confers important performance and safety benefits.