[rspeer]

You have to change the code a lot more to port it to an entirely different language.

[cpncrunch]

Of course, but the point is that you shouldn't really need to spend weeks updating your code just to upgrade to a newer version of the compiler.

[mrep]

I know right, you usually have to change a lot of code just to change versions of a framework.

One of my teammates just upgraded our django framework from 1.4 to 1.8 and it took him almost an entire week to do.

[craigds]

A week! It took me six months to port our main app from django 1.5 to 1.8. Though our app is huge, and most of that was migrating from DRF 2.3 to 3.3.