About the implementation of del in Python 3
Gregory Ewing
greg.ewing at canterbury.ac.nz
Fri Jul 7 04:12:22 EDT 2017
Steve D'Aprano wrote:
> That implies that it is impossible to implement Scheme:
>
> - using a programming language where variables and objects may move during their
> lifetime;
>
> - or using a computing device without conventional memory, e.g. implementing
> Scheme using hydraulics, DNA computing, clockwork, or emulated in the human
> brain.
Only if you interpret the word "address" very narrowly.
By the way, even the low-level notion of "address" that C
programs deal with is, on most modern hardware, a *virtual*
address that goes through a level of translation before it
identifies a physical set of transistors, and that mapping
can change as stuff gets paged in and out. So it's already
an abstract concept to some extent.
--
Greg
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