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Re^2: Understanding the Schwartzian transform.

by Anonymous Monk
on Jul 22, 2013 at 06:59 UTC ( #1045604=note: print w/ replies, xml ) Need Help??


in reply to Re: Understanding the Schwartzian transform.
in thread Understanding the Schwartzian transform.

...and its associated size in bytes

s/associated size in bytes/modification time/;


Excellent. Thanks all for the help. Is this the canonical form of the Schwartzian Transform or a variant?


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Re^3: Understanding the Schwartzian transform.
by Laurent_R (Vicar) on Jul 22, 2013 at 07:29 UTC

    Is this the canonical form of the Schwartzian Transform or a variant?

    Yes, it can be considered as the canonical form of the Schwartzian Transform. The original ST that appeared in a newsgroup more than 15 years ago might not have worked on fila age (I don't remember), but, definitely, the "output_array = map {block} sort {block} map {block} input array" is the canonical form of the Schwartzian Transform.

      but, definitely, the "output_array = map {block} sort {block} map {block} input array" is the canonical for of the Schwartzian Transform.

      Sorry, that is like the generic form of Guttman-Rosler Transforms (see links) except without the secret ingredient :)(normalize/restore)

      Schwartzian is

      my @sorted = map { restore_from_cache } sort { by_cached_expensive } map { store_cache_expensive } @original;

        Sorry, but except that I did not detail what goes into the code blocks (as this has been detailed well enough the the previous posts), I do not see any difference between your version of the Schwartzian Transform and mine.

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