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import-bot (20211) [Avatar] Offline
[Originally posted by vipinh]

Hi Dave,
Regarding the final one-line Schwartzian Transform code on Page 45 of your
book , shouldn't this

my @CDs_sorted_by_year = map { $_->[0] }
sort { $a->[1] <=> $b->[1] }
map { [$_, $_->{year}] } @CDs;

my @CDs_sorted_by_year = map { $_->[0] }
sort { $a->[1] <=> $b->[1] }
map { [$_->{year},$_] } @CDs;
import-bot (20211) [Avatar] Offline
Re: Errata in Schwartzian transform line:
[Originally posted by dave]

No, I think it's fine the way it is.

The first map (at the bottom) creates two item arrays. Element 0 is the
original data and element 1 is the year taken from the data record.

The sort then sorts on element 1 (the year) and the final map (at the top)
extracts the original data from element 0.

Does that help?