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Function `std.json.JSONValue.get`

Generic type value getter A convenience getter that returns this JSONValue as the specified D type.


						
				inout inout(T) get(T)() const pure @property @safe;
				

				

				inout inout(T) get(T)() pure @property @trusted;

Note

only numeric, bool, string, JSONValue[string] and JSONValue[] types are accepted

Throws

JSONException if T cannot hold the contents of this JSONValue

Example

import std.exception;
string s =
`{
    "a": 123,
    "b": 3.1415,
    "c": "text",
    "d": true,
    "e": [1, 2, 3],
    "f": { "a": 1 }
 }`;

struct a { }

immutable json = parseJSON(s);
writeln(json["a"].get!double); // 123.0
writeln(json["a"].get!int); // 123
writeln(json["b"].get!double); // 3.1415
assertThrown(json["b"].get!int);
writeln(json["c"].get!string); // "text"
writeln(json["d"].get!bool); // true
assertNotThrown(json["e"].get!(JSONValue[]));
assertNotThrown(json["f"].get!(JSONValue[string]));
static assert(!__traits(compiles, json["a"].get!a));
assertThrown(json["e"].get!float);
assertThrown(json["d"].get!(JSONValue[string]));
assertThrown(json["f"].get!(JSONValue[]));

Authors

Jeremie Pelletier, David Herberth

License

Boost License 1.0.