17 Sep
2015
17 Sep
'15
10:29 a.m.
On 2015-09-17 12:44 PM, Jon Elson wrote:
Most modern computer languages run with the executable instructions in a
"pure code" section, which is set to be NOT writeable by the program.
This avoids a LOT of simple mistakes and REALLY hard to find program
crashes.
This is true of MS, Linux/Unix and the VMS program environment that I
have used for about 40 years. I think you have to go back to maybe
Windows 95 or RT-11 to not have that protection.
Modern languages extend this "protection" further, to the programmer
model, with immutable bindings and data structures, shunning variables
entirely.
--Toby
From:
Dave Wade
to me a "computer" without
self-modifying code is a programmable
calculator even if it has index registers...
Jon