On Wed, Sep 6, 2017 at 5:48 AM, Stefan Ram <r...@zedat.fu-berlin.de> wrote:
> Depends on the meaning of "meaningful". In Java, one can
> inspect and manipulate pointers like in this program for
> example:
> [chomp code]
That shows that the Java '==' operator is like the Python 'is'
operator, and checks for object identity. You haven't manipulated
pointers at all. In contrast, here's a C program that actually
MANIPULATES pointers:
#include <stdio.h>
void do_stuff(int *x)
{
printf("x (%p) points to %d\n", x, *x);
x += 2;
printf("Now x (%p) points to %d\n", x, *x);
}
int main()
{
int x[3] = {28, 42, 79};
do_stuff(x); /* or do_stuff(&x[0]); */
return 0;
}
You can't do this with Python, since pointer arithmetic fundamentally
doesn't exist. You can in C. Can you in Java?
ChrisA
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