JSON

JavaScript Object Notation: Data Interchange Format
Subset of JavaScript
Support three types of value
- Object, Mapping, Hashes, Dictionary: Set of key-value pairs
- Array, Sequence, List: Ordered list of values
- Scalars: Single not-dividable value

1. Object

Object, Mapping, Hashes, Dictionary: Set of key-value pairs
Set of key-value pairs in braces
Key and value are separated by colon
Key-value pairs are separated by comma

{KEY: VALUE(, KEY: VALUE)*}

2. Array

Array, Sequence, List: Ordered list of values
Ordered list in brackets
Values are separated by comma

[VALUE(, VALUE)+]

3. Scalars

Scalars: Single not-dividable value
String: Text in double quotes: "CONTENT"
- Use backslash escape
Number: -?INTEGER(.INTEGER)?[eE][-+]?INTEGER
Boolean: true|false
Null: null

4. White Space

Can be inserted between any pair of tokens