Do JSON keys need to be unique?
99147
Does JSON syntax allow duplicate keys in an object?
47947
Is Object.GetHashCode() unique to a reference or a value?
40963
What is the correct JSON content type?
17415
case-insensitive array_unique
55696
Python dictionary: are keys() and values() always the same order?
88539
What is the difference between Primary Key and unique key constraint?
58229
Is a table without a primary key normalized?
54987
INT vs Unique-Identifier for ID field in database
41444
What are the reasons why Map.get(Object key) is not (fully) generic
11999
Reference: Why are my "special" Unicode characters encoded weird using json_encode?
137461
Multiple values for a single config key
142356
Combinations of fields to be unique
33113
Get unique results from JSON array using jQuery
34571
Limiting Keys in Type Safe Heterogenous Containers
110947
Unique construct for passing a hash
133348
Is isomorphism not always unique?
22593
How to create a JSON object