Json in D: clean, simple API

[Adam D. Ruppe via Digitalmars-d]

On Thursday, 11 May 2017 at 20:22:22 UTC, aberba wrote:
> With that i meant designing of a simple-clean api

my jsvar.d works kinda similarly to javascript... though i 
wouldn't call it "clean" because it will not inform you of 
missing stuff.

jsvar.d is here:
https://raw.githubusercontent.com/adamdruppe/arsd/master/jsvar.d

---

// dmd test.d jsvar.d
import arsd.jsvar;
import std.stdio;

void main() {
	// reading json with `var.fromJson`
	var obj = var.fromJson(`{"a":{"b":10},"c":"hi"}`);
	// inspecting contents
	writeln(obj.a);
	writeln(obj.a.b);
	writeln(obj.c);

	// convert to basic static type with `.get!T`
	string c = obj.c.get!string;

	// change the contents with dot notation
	obj.a = 15;
	obj.d = "add new field too";

	writeln(obj);

	struct Test {
		int a;
		string c;
	}

	// can even get plain structs out
	Test test = obj.get!Test;
	writeln(test);

	// and set structs
	test.c = "from D";
	obj = test;
	writeln(obj);

	// writeln on an object prints it in json
	// or you can explicitly do

	writeln(obj.toJson());



	// big thing is referencing non-existent
	// things is not an error, it just propagates null:
	writeln(obj.no.such.property); // null
	// but that can be convenient
}
---