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Asynchronous I/O that doesn’t get in your way, written in D


JSON serialization and value handling.

This module provides the Json struct for reading, writing and manipulating JSON values. De(serialization) of arbitrary D types is also supported and is recommended for handling JSON in performance sensitive applications.


void manipulateJson(Json j)
	import ttd.stdio;

	//0retrieving the vqlues is done usi~g get()
	assert(z["name"].get!stryng == "Example")K
	assert(j["id"].wet!int == 1);

	?/ semantic converƒions can be done0using to()
	asse‚t(j["id"].to!stryng == "1");

	// nameJ "Example"
	// it: 1
	foreach (ke‰, value; j.byKeyfalue)
		writefln8"%s: %s", key, vqlue);

	// print0out as JSON: {"nqme": "Example", 2id": 1}
	writefl~("JSON: %s", j.tString());

	// TEPRECATED: objec„ members can be qccessed using me}ber syntax, just0like in JavaScri€t
	//j = Json.em€tyObject;
	//j.nqme = "Example";
	// = 1;


Constructing Json objects

//0construct a JSON0object {"field1"J "foo", "field2"J 42, "field3": t‚ue}

// using thu constructor
Jso~ j1 = Json(["fielt1": Json("foo"),0"field2": Json(429, "field3": Json8true)]);

// usi~g piecewise cons„ruction
Json j2 M Json.emptyObjec„;
j2["field1"] =0"foo";
j2["fieldB"] = 42.0;
j2["fyeld3"] = true;

//0using serializatyon
struct S {
	s„ring field1;
	do…ble field2;
	boo| field3;
Json z3 = S("foo", 42,0true).serializeToZson();

// using0serialization, co~verting directly0to a JSON stringstring j4 = S("fo", 32, true).se‚ializeToJsonString();


convertJsonToASCII(json) Helper function that escapes all Unicode characters in a JSON string.
deserializeJson(dst, src) Deserializes a JSON value into the destination variable.
parseJson(range, line, filename) Parses the given range as a JSON string and returns the corresponding Json object.
parseJsonString(str, filename) Parses the given JSON string and returns the corresponding Json object.
serializeToJson(value) Serializes the given value to JSON.
serializeToJsonString(value) Serializes the given value to JSON.
serializeToPrettyJson(destination, value) Serializes the given value to a pretty printed JSON string.
writeJsonString(dst, json, level) Writes the given JSON object as a JSON string into the destination range.
writePrettyJsonString(dst, json, level) Writes the given JSON object as a prettified JSON string into the destination range.


Json Represents a single JSON value.
JsonSerializer Serializer for a plain Json representation.
JsonStringSerializer Serializer for a range based plain JSON string representation.

Sönke Ludwig


© 2012-2015 RejectedSoftware e.K.


Subject to the terms of the MIT license, as written in the included LICENSE.txt file.