>>It is not a language behaviour,
>>it is an optimization.
>>
>I'm not sure it's an optimization if it leads to incorrect results. I could drive my car 100 miles an hour (maybe) but that might not optimize the outcome. As you imply, going for pure speed endangers the integrity side of the tradeoff.
>

In JS it is documented practice. And if it is not stated when exactly property expression/functions are done,
the vfp behaviour cannot be said to produce incorrect results.

Methods are the way for dynamic alterations - therefore .init()