Poll: a nonstate keyword

[terranium]

Fawzi Mohamed Wrote:

> Basically it is an unsafe hole that allows to implement nice an useful 
> stuff (suspended values(lazy eval & cache), dataflow variables, 
> memoization, performace/statistical information), but can break 
> invariant and introduce subtle bugs.
>
Jeffrey Richter in "CLR via C#" proposes to implement immutability as a class design rather than compiler-checked const. Transitive const is good for POD, but for classes... it seems to have high complexity and unpredictable behavior in complex cases, and it's nearly unneeded in simple cases.