KeyedJsonTable<T extends Comparable> class

A class representing a keyed JSON table.

This class extends the Iterable class and provides functionality for working with a table of JSON rows. Each row in the table is associated with a unique key value.

The KeyedJsonTable class has the following properties and methods:

• keyName: The name of the key field in each JSON row.
• table: The underlying JsonTable that holds the JSON rows.
• operator []: Retrieves the JSON row with the specified key.
• operator []=: Sets the JSON row with the specified key.
• addAll: Adds multiple JSON rows to the table.
• add: Adds a single JSON row to the table.
• containsKey: Checks if a JSON row with the specified key exists in the table.
• remove: Removes the JSON row with the specified key from the table.
• clear: Clears all the JSON rows from the table.

Example usage:

var table = KeyedJsonTable<int>(keyName: 'id');
table.addAll(JsonTable.fromList([
  {'id': 1, 'name': 'John'},
  {'id': 2, 'name': 'Jane'},
]));

var row = table[1];
print(row); // {'id': 1, 'name': 'John'}

table[2] = {'id': 2, 'name': 'Jane Doe'};

print(table.containsKey(2)); // true

table.remove(1);
print(table.length); // 1

table.clear();
print(table.isEmpty); // true