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From: Junio C Hamano <gitster@pobox.com>
To: Taylor Blau <me@ttaylorr.com>
Cc: Parth Gala via GitGitGadget <gitgitgadget@gmail.com>,
	git@vger.kernel.org, Parth Gala <parthpgala@gmail.com>
Subject: Re: [PATCH 2/5] object.c: lookup_unknown_object() accept 'r' as parameter
Date: Wed, 12 Feb 2020 13:11:02 -0800
Message-ID: <xmqqtv3vtst5.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20200212202540.GD4364@syl.local> (Taylor Blau's message of "Wed, 12 Feb 2020 12:25:40 -0800")

Taylor Blau <me@ttaylorr.com> writes:

> ... same question about why assigning:
>
>   struct repository *r = the_repository;
>
> and passing 'r' everywhere is preferable to simply passing
> 'the_repository' in directly.
> ...
>>  static void mark_object_for_connectivity(const struct object_id *oid)
>>  {
>> -	struct object *obj = lookup_unknown_object(oid);
>> +	struct repository *r = the_repository;
>> +	struct object *obj = lookup_unknown_object(r, oid);
>>  	obj->flags |= HAS_OBJ;
>>  }

I do not claim that it applies to this particular function, and the
function is too small for it to matter, but when a function is large
enough and it always works on one single repository, it would make
it easier to later update the function further to set up 'r'
upfront, making it point at the_repository for now, and to use 'r'
throughout the function.  That way, when the time comes to update
the function to work on an arbitrary repository, the only change
required will be to turn the local variable 'r' to an incoming
parameter the caller can supply.

  reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-12 19:19 [PATCH 0/5] object.c: localize global the_repository variable into r Parth Gala via GitGitGadget
2020-02-12 19:19 ` [PATCH 1/5] object.c: get_max_object_index and get_indexed_object accept 'r' parameter Parth Gala via GitGitGadget
2020-02-12 20:22   ` Taylor Blau
2020-02-12 21:13     ` Eric Sunshine
2020-02-13  5:23     ` parth gala
2020-02-12 19:19 ` [PATCH 2/5] object.c: lookup_unknown_object() accept 'r' as parameter Parth Gala via GitGitGadget
2020-02-12 20:25   ` Taylor Blau
2020-02-12 21:11     ` Junio C Hamano [this message]
2020-02-13 18:00       ` Taylor Blau
2020-02-13 18:10         ` Junio C Hamano
2020-02-13 18:52           ` Jeff King
2020-02-15  0:00             ` Taylor Blau
2020-02-12 19:19 ` [PATCH 3/5] object.c: parse_object_or_die() " Parth Gala via GitGitGadget
2020-02-12 19:19 ` [PATCH 4/5] object.c: clear_object_flags() " Parth Gala via GitGitGadget
2020-02-12 19:19 ` [PATCH 5/5] object.c: clear_commit_marks_all() " Parth Gala via GitGitGadget
2020-02-12 20:18 ` [PATCH 0/5] object.c: localize global the_repository variable into r Taylor Blau
2020-02-13  5:14   ` parth gala

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