Function parseJson

Parses JSON. The result is passed to opt, any error results in None.

Example

parseJson('{"a": 1}') // Some({a: 1})
parseJson('Ryoka') // None
parseJson('null') // None - valid JSON (according to the new standard), but opt(null) is None
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Typical use is to call Opt.narrow afterwards to validate parsed data and get proper type.