Re: [PATCH v2 00/10] send-email: various optimizations to speed up by >2x

Ævar Arnfjörð Bjarmason [off-list ref] writes:

Returning a flattened list is idiomatic in Perl, it means that a caller
can do any of:

    # I only care about the last value for a key, or only about
    # existence checks
    my %hash = func();

Or:

    # I want all key-values to iterate over
    my @kv = func();

Returning touples like this makes that less convenient for both, who'll
need to do more work to unpack them.

Thanks---that was exactly what I was missing.  Following establshed
patterns is good.

So what remains is just the compatibility issues, I think.

Thanks for clarification.