From: Michel Demazure <michel@...>
Date: 2010-12-31T22:57:48+09:00
Subject: Re: a common idiom

A benchmark for the five variants
          user     system      total        real
  []     3.235000   0.047000   3.282000 (  3.296875)
  tap    3.265000   0.000000   3.265000 (  3.265625)
compact  3.547000   0.016000   3.563000 (  3.562500)
reject   5.078000   0.015000   5.093000 (  5.093750)
 memo    9.610000   0.000000   9.610000 (  9.609375)

_md

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