Re: 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
}
---