From: Felipe Contreras <felipe.contreras@gmail.com>
To: "Bagas Sanjaya" <bagasdotme@gmail.com>,
"Anders Höckersten via GitGitGadget" <gitgitgadget@gmail.com>,
git@vger.kernel.org
Cc: "Anders Höckersten" <anders@hockersten.se>
Subject: Re: [PATCH] describe-doc: clarify default length of abbreviation
Date: Sun, 16 May 2021 13:51:10 -0500 [thread overview]
Message-ID: <60a1699eedcd4_109fc7208e1@natae.notmuch> (raw)
In-Reply-To: <1dc7877e-adb4-e3f5-3b59-bd45f9673596@gmail.com>
Bagas Sanjaya wrote:
> On 16/05/21 14.32, Anders Höckersten via GitGitGadget wrote:
> > @@ -139,8 +140,11 @@ at the end.
> >
> > The number of additional commits is the number
> > of commits which would be displayed by "git log v1.0.4..parent".
> > -The hash suffix is "-g" + unambiguous abbreviation for the tip commit
> > -of parent (which was `2414721b194453f058079d897d13c4e377f92dc6`).
> > +The hash suffix is "-g" + an unambigous abbreviation for the tip commit
> > +of parent (which was `2414721b194453f058079d897d13c4e377f92dc6`). The
> > +length of the abbreviation scales as the repository grows, using the
> > +approximate number of objects in the repository and a bit of math
> > +around the birthday paradox, and defaults to a minimum of 7.
>
> What is the birthday paradox then?
It's a probability fact that goes against common sense. In a romm with 23
people you are 50% likely to find two people with the same birthday.
https://en.wikipedia.org/wiki/Birthday_problem
--
Felipe Contreras
next prev parent reply other threads:[~2021-05-16 19:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-16 7:32 [PATCH] describe-doc: clarify default length of abbreviation Anders Höckersten via GitGitGadget
2021-05-16 11:34 ` Junio C Hamano
2021-05-16 12:00 ` Bagas Sanjaya
2021-05-16 12:47 ` Anders Höckersten
2021-05-16 12:58 ` Junio C Hamano
2021-05-17 5:51 ` Anders Höckersten
2021-05-16 18:51 ` Felipe Contreras [this message]
2021-05-16 19:00 ` Robert P. J. Day
2021-05-16 21:07 ` Felipe Contreras
2021-05-17 5:53 ` [PATCH v2] " Anders Höckersten via GitGitGadget
2021-05-17 16:44 ` Derrick Stolee
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