Re: deserialization: creating a class instance without calling constructor

[timotheecour via Digitalmars-d-learn]

On Thursday, 21 May 2015 at 19:06:35 UTC, Jacob Carlborg wrote:

On 2015-05-21 11:06, Timothee Cour via Digitalmars-d-learn wrote:

Can I create an instance of A without calling a constructor? (see below) Use case: for generic deserialiaztion, when the deserialization library encounters a class without default constructor for example (it knows what the fields should be set to, but doesn't know how to construct the

object).

class A{
  int x=2;
  this(int x){
    this.x=x;
  }
}


This came up here:
https://github.com/msgpack/msgpack-d/issues/54#issuecomment-104136148

I provide some hacky solution for that in that thread but I suspect it's

not safe and something is missing.

Here's how I do it in my serialization library Orange [1]

[1] https://github.com/jacob-carlborg/orange/blob/master/orange/util/Reflection.d#L166

Thanks!