From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Junio C Hamano <gitster@pobox.com>
Cc: Kevin Willford <kcwillford@gmail.com>,
git@vger.kernel.org, Kevin Willford <kewillf@microsoft.com>
Subject: Re: [[PATCH v2] 4/4] rebase: avoid computing unnecessary patch IDs
Date: Thu, 4 Aug 2016 16:21:11 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1608041620290.5786@virtualbox> (raw)
In-Reply-To: <xmqqziot5jc3.fsf@gitster.mtv.corp.google.com>
Hi Junio,
On Wed, 3 Aug 2016, Junio C Hamano wrote:
> Junio C Hamano <gitster@pobox.com> writes:
>
> > I do not think negative (or non-zero) return is an "abuse" at all.
> > It is misleading in the context of the function whose name has "cmp"
> > in it, but that is not the fault of this function, rather, the
> > breakage is more in the API that calls a function that wants to know
> > only equality a "cmp". A in-code comment before the function name
> > may be appropriate:
> >
> > /*
> > * hashmap API calls hashmap_cmp_fn, but it only wants
> > * "does the key match the entry?" with 0 (matches) and
> > * non-zero (does not match).
> > */
> > static int patch_id_match(const struct patch_id *ent,
> > const struct patch_id *key,
> > const void *keydata)
> > {
> > ...
>
> How about this one instead (to be squashed into 4/4)?
>
> The updated wording directly addresses the puzzlement I initially
> felt "This returns error() which is always negative, so comparing
> (A, B) would say A < B, while comparing (B, A) would say B < A.
> Would it cause a problem in the caller?" while reading the function
> by being explicit that the sign does not matter.
Please squash it in. Kevin is on vacation and I am sure he is fine with
this change.
Thanks,
Dscho
next prev parent reply other threads:[~2016-08-04 14:21 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-29 16:19 [[PATCH v2] 0/4] Use header data patch ids for rebase to avoid loading file content Kevin Willford
2016-07-29 16:19 ` [[PATCH v2] 1/4] patch-ids: stop using a hand-rolled hashmap implementation Kevin Willford
2016-07-29 20:47 ` Junio C Hamano
2016-08-01 8:54 ` Johannes Schindelin
2016-08-01 20:04 ` Junio C Hamano
2016-08-01 22:34 ` Eric Wong
2016-08-02 10:30 ` Johannes Schindelin
2016-08-02 17:01 ` Junio C Hamano
2016-08-02 18:04 ` Junio C Hamano
2016-07-29 21:29 ` Junio C Hamano
2016-07-29 16:19 ` [[PATCH v2] 2/4] patch-ids: replace the seen indicator with a commit pointer Kevin Willford
2016-07-29 21:03 ` Junio C Hamano
2016-07-29 16:19 ` [[PATCH v2] 3/4] patch-ids: add flag to create the diff patch id using header only data Kevin Willford
2016-07-29 16:19 ` [[PATCH v2] 4/4] rebase: avoid computing unnecessary patch IDs Kevin Willford
2016-07-29 21:46 ` Junio C Hamano
2016-08-01 8:58 ` Johannes Schindelin
2016-08-01 20:11 ` Junio C Hamano
2016-08-02 9:50 ` Jakub Narębski
2016-08-02 17:06 ` Junio C Hamano
2016-08-02 10:45 ` Johannes Schindelin
2016-08-02 17:08 ` Junio C Hamano
2016-08-04 3:00 ` Junio C Hamano
2016-08-04 14:21 ` Johannes Schindelin [this message]
2016-07-29 20:22 ` [[PATCH v2] 0/4] Use header data patch ids for rebase to avoid loading file content Junio C Hamano
2016-08-01 9:01 ` Johannes Schindelin
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