1{ 2 "key": "optional", 3 "boost-version": "1.30.0", 4 "name": "Optional", 5 "authors": [ 6 "Fernando Cacciola" 7 ], 8 "description": "A value-semantic, type-safe wrapper for representing 'optional' (or 'nullable') objects of a given type. An optional object may or may not contain a value of the underlying type.", 9 "category": [ 10 "Data" 11 ], 12 "maintainers": [ 13 "Fernando Cacciola <fernando_cacciola -at- ciudad.com.ar>", 14 "Andrzej Krzemienski <akrzemi1 -at- gmail.com>" 15 ] 16} 17