Nmingott: syntax hilight

2025-05-12T20:08:10Z

syntax hilight

← Older revision		Revision as of 20:08, 12 May 2025
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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?		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.		First of all, to work with JSON you must load this package.<syntaxhighlight lang="smalltalk">
	Feature require: 'JSON'.		Feature require: 'JSON'.
			</syntaxhighlight>

	'''Problem'''. I want to convert a Cuis data structure in JSON, how do i do it?		'''Problem'''. I want to convert a Cuis data structure in JSON, how do i do it?

	'''Solution'''. By example.		'''Solution'''. By example.<syntaxhighlight lang="smalltalk">
	js1 _ Json render: {		js1 := Json render: {
	Dictionary newFromPairs: {'codice'. '111.653.735'. 'quantita'. '1'}.		Dictionary newFromPairs: {'codice'. '111.653.735'. 'quantita'. '1'}.
	Dictionary newFromPairs: {'codice'. '111.653.735'. 'quantita'. '2'}		Dictionary newFromPairs: {'codice'. '111.653.735'. 'quantita'. '2'}
	}.		}.

		⚫	js1 print. "=>"
		⚫	'[{"quantita": "1", "codice": "111.653.735"},
		⚫	{"quantita": "2", "codice": "111.653.735"}]'
			</syntaxhighlight>

⚫	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 ?		'''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.		'''Solution'''. By example. Using the output of previous problem.<syntaxhighlight lang="smalltalk">
	jo1 _ Json readFrom: (ReadStream on: js1).		jo1 := Json readFrom: (ReadStream on: js1).

	jo1 class. "=> Array "
	(jo1 ~~at: 1)~~ class. "=> ~~JsonObject~~ "		jo1 class. "=> Array "

⚫	jo1 at: 1. "=> a JsonObject('quantita'->'1' 'codice'->'111.653.735' ) "
	(jo1 at: 1) ~~at: 'codice'~~. "=> ~~'111.653.735'~~ "		(jo1 at: 1) class. "=> JsonObject "

		⚫	jo1 at: 1. "=> a JsonObject('quantita'->'1' 'codice'->'111.653.735' ) "

			(jo1 at: 1) at: 'codice'. "=> '111.653.735' "
			</syntaxhighlight>

	----Dr. Nicola Mingotti. Last updated 03-Sep-2021. Tested in Cuis-5.0-4815.image .		----Dr. Nicola Mingotti. Last updated 03-Sep-2021. Tested in Cuis-5.0-4815.image .

Nmingott: imported material

2025-05-04T20:07:43Z

imported material

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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 .

Dump and restore JSON data strings - Revision history

Nmingott: syntax hilight

Nmingott: imported material