Steven D'Aprano wrote:
In C, it might be something similar to:
const int *a = &x;
Not quite, that makes whatever a points to constant, not a
itself. But you can do this:
typedef int *ip;
int x, y;
const ip p = &x;
void f(void) {
*p = 42; /* ok */
p = &y; /* not ok */
}
Compiling this gives:
% gcc -c constptr.c
constptr.c: In function ‘f’:
constptr.c:7: error: assignment of read-only variable ‘p’
BTW, this shows that gcc thinks of const-declared things
as "read-only variables" rather than constants. Which is
a bit of a silly term when you think about it!
--
Greg
_______________________________________________
Python-ideas mailing list
Python-ideas@python.org
https://mail.python.org/mailman/listinfo/python-ideas
Code of Conduct: http://python.org/psf/codeofconduct/
