how to get the ordinal number in list
Roy Smith
roy at panix.com
Mon Aug 11 07:55:29 EDT 2014
In article <b3c69a72-5f0c-4e2a-8ef0-91842e12c7d0 at googlegroups.com>,
Rustom Mody <rustompmody at gmail.com> wrote:
> A C programmer asked to swap variables x and y, typically writes something
> like
>
> t = x; x = y; y = t;
>
> Fine, since C cant do better.
Sure C can do better.
x = x ^ y
y = y ^ x
x = x ^ y
Any self-respecting C hacker would write it this way :-)
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