On 11/08/2014 13:30, Tim Chase wrote:
On 2014-08-11 07:55, Roy Smith 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 :-)
Pish, such redundancy...everyone knows a C programmer would write
that as
x ^= y
y ^= x
x ^= y
:-)
-tkc
That says the LHS is assigned the RHS rotated by some angle, which I'll
assume to be 90 degrees clockwise, yes? Well I don't suppose it really
matters for x as it'll still be x when it gets assigned to y, but what
would you call the shift on y that gets assigned to x?
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
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