JSON object

Q: How deeply does Functional Programming in Scala, Second Edition cover JSON object?

Explains the grammar, data representation, and parser construction, while leaving primitive string and number parsers undefined.

As explained in Functional Programming in Scala, Second Edition

A JSON object is a JSON value containing comma-separated quoted-string keys paired with values and enclosed in curly braces.

A JSON object is a JSON value containing comma-separated key-value pairs enclosed in curly braces. Each key is a quoted string; each value may be another object, an array, or a literal such as a string, Boolean, null, or number. section 9.4.1

A company record

This object maps descriptive keys to values of different JSON types: strings for the company name and ticker, a Boolean for activity, numbers for price and shares, and an array for related companies.

A parsed object can be represented as JObject(get: Map[String, JSON]), turning the textual key-value sequence into a map whose values remain JSON values. Parsing then combines a quoted key with a colon and a value, accepts comma-separated pairs, and wraps the result in JObject.

How Functional Programming in Scala, Second Edition covers it

Cover of Functional Programming in Scala, Second Edition

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Related concepts

name-value pairhas part · A name-value pair is a data association in which an identifying name or key corresponds to a value.
JSONpart of · JSON is a standardized, language-independent text format for representing structured data using objects, arrays, strings, numbers, Boolean values, and null.
data structurekind of · A data structure is an organized representation of data and its relationships that supports defined operations for storing, accessing, or modifying it.
arraypart of · An array is an indexed, ordered collection of elements arranged in one or more dimensions, with elements accessed by position.
JSON arraycontrasts with · A JSON array is an ordered JSON value containing zero or more JSON values, represented as a comma-separated sequence enclosed in square brackets.
eventused by · An event is an occurrence, change, or associated record or notification recognized as significant within a system or context.

This explainer was generated by Manning's knowledge graph from the text of Functional Programming in Scala, Second Edition. The section links point to the parts of the book it draws on.