[Issue 7015] ^^ and ^^= vector operations

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7015



--- Comment #2 from bearophile_hugs at eml.cc 2011-12-10 10:36:52 PST ---
(In reply to comment #1)
> How, exactly, does this differ from (marked fixed) issue 3661?

Thank you Stewart, you are right. Vector pow is already implemented:


import std.math, std.stdio;
void main() {
    int[3] a = [1, 2, 3];
    int[3] b;
    b = a[] ^^ 2;
    writeln(b);
    a[] ^^= 2;
    writeln(a, " ", b);
}


So this is a:
1) A diagnostic bug, because the error message is misleading.
2) It shows a more general design problem with vector operations, because code
like this too is refused with a similar error message:

void main() {
    int[] a = [1, 2, 3];
    int[] b = a[] + 2;
}

Vector ops require the memory needed to store the result to be already present.
I don't know if this will change.

What do you suggest to do with this bug report, to close it?

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