const

[Sean Kelly]

Walter Bright wrote:
> Jason House wrote:
>> Back when everyone was trying to understand the new const designs, we all
>> called const "readonly".  Every time someone asks today, we always 
>> describe
>> it as readonly. Why not use that term if it makes sense to everyone?!
> 
> const, readonly, invariant, and immutable all mean exactly the same thing.

...and yet we currently use 'const' and 'invariant' for two entirely 
different concepts.