Meaning of let msg = %* {"message": "Hello World"} ?

[luked2]

Hi!

In the asynhttp server documentation, the example code has this:
    
    
    let msg = %* {"message": "Hello World"}
    

but that doesn't seem to compile, at least not for me.

I just get:

> Error: undeclared identifier: '%*'

What's up?

[http://nim-lang.org/docs/asynchttpserver.html](http://nim-lang.org/docs/asynchttpserver.html)

Thanks Luke