文件列表:

LICENSE (11357, 2018-04-12)
bench.d (3931, 2018-04-12)
jsonx.d (27766, 2018-04-12)
main.d (1451, 2018-04-12)

d-json ====== Decode JSON to User-Defined Type -------------------------------- If called with a particular type, `jsonDecode!T(json)` takes an input range `json` and gives you an instance of the type `T`. It will throw a `JsonException` if the json is invalid or if the json is valid but cannot be coerced to type `T`. Here's an example using a user-defined struct: ```d import jsonx; import std.stdio; struct MyConfig { string encoding; string[] plugins; int indent = 2; bool indentSpaces; } void main() { auto json = `{ "encoding" : "UTF-8", "indent" : 4, "plugins" : [ "d", "c++" ], "indentSpaces" : true }`; MyConfig myconf = jsonDecode!MyConfig(json); writeln("indent = ", myconf.indent); // Prints "4" } ``` Builtin types like `int[]` and `string[string]` work as well. Decode JSON to Variant ---------------------- If called without template arguments, `jsonDecode` gives you a generic `JsonValue` (currently implemented with a [Variant](http://d-programming-language.org/phobos/std_variant.html)). - JSON arrays are parsed as `JsonValue[]` - JSON objects are parsed as `JsonValue[string]` - JSON strings are parsed as `string` - JSON numbers are parsed as `real` - JSON booleans are parsed as `bool` - JSON nulls are parsed as `JsonNull` structs (an empty type) Here's an example: ```d import jsonx; import std.stdio; void main() { auto json = `{ "reals" : [ 3.4, 7.2e+4, 5, 0, -33 ], "conf" : { "plugins" : [ "d", "java" ], "bar" : true } }`; auto obj = jsonDecode(json); writeln("your plugins are:"); foreach(JsonValue plugin; obj["conf"]["plugins"]) { writeln("- ", plugin); } writeln("back to json: ", jsonEncode(obj)); } ``` Encoding to JSON ---------------- `jsonEncode(v)` takes either a JsonValue from jsonDecode or a regular type and gives you a `string`. Here's an example with a simple array: ```d auto json = jsonEncode([1, 2, 3]); // "[1,2,3]" ``` You can ask for a `wstring` or `dstring` if you'd prefer it over a regular `string`: ```d auto json = jsonEncode!dstring([1, 2, 3]); // "[1,2,3]"d ``` You can also pass in an output range: ```d auto f = File("test.txt", "w"); auto fw = File.LockingTextWriter(f); jsonEncode([1, 2, 3], fw); // write to test.txt ```

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