Dump and restore JSON data strings
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Since Javascript is the only language running inside Web browsers it has become extremely popular to dump and exchange data in JSON format. How do I read a JSON dump made from others? How do I make my own?
First of all, to work with JSON you must load this package.
Feature require: 'JSON'.
Problem. I want to convert a Cuis data structure in JSON, how do i do it?
Solution. By example.
js1 := Json render: {
Dictionary newFromPairs: {'codice'. '111.653.735'. 'quantita'. '1'}.
Dictionary newFromPairs: {'codice'. '111.653.735'. 'quantita'. '2'}
}.
js1 print. "=>"
'[{"quantita": "1", "codice": "111.653.735"},
{"quantita": "2", "codice": "111.653.735"}]'
Problem. I want to read some JSON string and use it as a data structure in Cuis, how do I do ?
Solution. By example. Using the output of previous problem.
jo1 := Json readFrom: (ReadStream on: js1).
jo1 class. "=> Array "
(jo1 at: 1) class. "=> JsonObject "
jo1 at: 1. "=> a JsonObject('quantita'->'1' 'codice'->'111.653.735' ) "
(jo1 at: 1) at: 'codice'. "=> '111.653.735' "
Dr. Nicola Mingotti. Last updated 03-Sep-2021. Tested in Cuis-5.0-4815.image .