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Organization: Ain't no organization here!
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Subject: Re: Ideas for Ada 200X
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> And let's not forget that +=, -=, etc. also allow for more efficient
> in-place vector/matrix operations because they avoid the need for a
> temporary. If you don't understand this, that's OK, but please don't
> argue with me because you will be wrong.

Neither
    A := A + B;
nor
    A += B; -- if it existed in Ada

would need a temporary except when required by checking rules
and exception rules.  If one needs a temporary, the other does.
After all, they are the same, are they not?

The use of a temporary has NOTHING to do with which format
you choose to write the SAME operation in.