> > it silently uses :: in a different sense than anywhere else in the language
I started writing a reply here, but realized it would be more instructive to have it as an IJulia notebook, where we can actually inspect the values of various statements along the way - take a look here instead: http://nbviewer.ipython.org/github/tlycken/IJulia-Notebooks/blob/master/A%20more%20thorough%20look%20at%20Julia's%20%22double%20colon%22%20syntax.ipynb I hope it makes things a little clearer. I tried to base it on the relevant section on `::` in the manual (http://docs.julialang.org/en/latest/manual/types/#type-declarations) and expand it with more examples etc, so I hope it's possible to see the connections. // T
