const by default.

[Sean Kelly]

BCS wrote:
> 
> The issue as to the mutability of local variables is another thing all 
> together. I haven't heard any agreement on what is best here. One 
> thought I like is local reference type variables are localy mutable. 
> However if you are passing them to a function they become implicitly 
> immutable unless you say otherwise.

I was thinking along the same lines.  There really isn't much of an 
advantage to making local variables immutable.


Sean