There’s a special case here: if the map contains a register at the given key, but the register contains null, the map is considered to not contain the key.
Англия — Премьер-лига|29-й тур
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For more details on the internal file structures, see the file formats document.
Что думаешь? Оцени!
Consider that many companies still primarily run on Excel. What's the Excel of JSON? There is none. So yeah, of course users think they need a machine to translate their intent into code so they can run it. Even then, what's the Jupyter notebooks of JSON?