From: Junio C Hamano <gitster@pobox.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, Emily Shaffer <emilyshaffer@google.com>,
Derrick Stolee <stolee@gmail.com>
Subject: Re: [PATCH v3 2/5] strvec: add a strvec_pushvec()
Date: Fri, 27 Aug 2021 18:29:30 -0700 [thread overview]
Message-ID: <xmqq4kba9x1h.fsf@gitster.g> (raw)
In-Reply-To: <xmqq8s0m9xbl.fsf@gitster.g> (Junio C. Hamano's message of "Fri, 27 Aug 2021 18:23:26 -0700")
Junio C Hamano <gitster@pobox.com> writes:
>> +void strvec_pushvec(struct strvec *array, const struct strvec *items)
>> +{
>> + int i;
>> +
>> + for (i = 0; i < items->nr; i++)
>> + strvec_push(array, items->v[i]);
>> +}
>
> This implementation is not wrong per-se, but is somewhat
> disappointing. When items->nr is large, especially relative to the
> original array->alloc, it would incur unnecessary reallocations that
> we can easily avoid by pre-sizing the array before pushing the
> elements of items from it.
>
> In the original code that became the first user of this helper, it
> may not have made much difference, but now it is becoming a more
> generally reusable API function, we should care.
And if we do not care, you can rewrite the code that became the
first user of this helper to instead call strvec_pushv() on the
items->v array that is guaranteed to be NULL terminated, without
inventing this new helper.
I think I am fine with either way.
next prev parent reply other threads:[~2021-08-28 1:29 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 0:41 [PATCH 0/4] bundle: show progress on "unbundle" Ævar Arnfjörð Bjarmason
2021-07-27 0:41 ` [PATCH 1/4] bundle API: start writing API documentation Ævar Arnfjörð Bjarmason
2021-07-27 0:41 ` [PATCH 2/4] bundle API: change "flags" to be "extra_index_pack_args" Ævar Arnfjörð Bjarmason
2021-07-27 0:41 ` [PATCH 3/4] index-pack: add --progress-title option Ævar Arnfjörð Bjarmason
2021-07-27 0:41 ` [PATCH 4/4] bundle: show progress on "unbundle" Ævar Arnfjörð Bjarmason
2021-08-23 11:02 ` [PATCH v2 0/4] " Ævar Arnfjörð Bjarmason
2021-08-23 11:02 ` [PATCH v2 1/4] bundle API: start writing API documentation Ævar Arnfjörð Bjarmason
2021-08-24 17:01 ` Derrick Stolee
2021-08-24 21:48 ` Ævar Arnfjörð Bjarmason
2021-08-23 11:02 ` [PATCH v2 2/4] bundle API: change "flags" to be "extra_index_pack_args" Ævar Arnfjörð Bjarmason
2021-08-24 17:09 ` Derrick Stolee
2021-08-24 21:41 ` Ævar Arnfjörð Bjarmason
2021-08-24 21:48 ` Derrick Stolee
2021-08-23 11:02 ` [PATCH v2 3/4] index-pack: add --progress-title option Ævar Arnfjörð Bjarmason
2021-08-24 17:18 ` Derrick Stolee
2021-08-24 21:40 ` Ævar Arnfjörð Bjarmason
2021-08-23 11:02 ` [PATCH v2 4/4] bundle: show progress on "unbundle" Ævar Arnfjörð Bjarmason
2021-08-24 17:23 ` Derrick Stolee
2021-08-24 21:39 ` Ævar Arnfjörð Bjarmason
2021-08-26 14:05 ` [PATCH v3 0/5] " Ævar Arnfjörð Bjarmason
2021-08-26 14:05 ` [PATCH v3 1/5] bundle API: start writing API documentation Ævar Arnfjörð Bjarmason
2021-08-26 14:05 ` [PATCH v3 2/5] strvec: add a strvec_pushvec() Ævar Arnfjörð Bjarmason
2021-08-28 1:23 ` Junio C Hamano
2021-08-28 1:29 ` Junio C Hamano [this message]
2021-08-28 4:12 ` Jeff King
2021-08-29 23:54 ` Junio C Hamano
2021-08-30 17:30 ` Derrick Stolee
2021-09-02 23:19 ` Ævar Arnfjörð Bjarmason
2021-09-03 5:05 ` Junio C Hamano
2021-09-03 11:06 ` Jeff King
2021-08-26 14:05 ` [PATCH v3 3/5] bundle API: change "flags" to be "extra_index_pack_args" Ævar Arnfjörð Bjarmason
2021-08-28 1:44 ` Junio C Hamano
2021-08-26 14:05 ` [PATCH v3 4/5] index-pack: add --progress-title option Ævar Arnfjörð Bjarmason
2021-08-28 1:50 ` Junio C Hamano
2021-08-26 14:05 ` [PATCH v3 5/5] bundle: show progress on "unbundle" Ævar Arnfjörð Bjarmason
2021-08-28 1:54 ` Junio C Hamano
2021-09-02 22:47 ` Ævar Arnfjörð Bjarmason
2021-09-05 7:34 ` [PATCH v4 0/4] " Ævar Arnfjörð Bjarmason
2021-09-05 7:34 ` [PATCH v4 1/4] bundle API: start writing API documentation Ævar Arnfjörð Bjarmason
2021-09-05 7:34 ` [PATCH v4 2/4] bundle API: change "flags" to be "extra_index_pack_args" Ævar Arnfjörð Bjarmason
2021-09-05 7:34 ` [PATCH v4 3/4] index-pack: add --progress-title option Ævar Arnfjörð Bjarmason
2021-09-05 7:34 ` [PATCH v4 4/4] bundle: show progress on "unbundle" Ævar Arnfjörð Bjarmason
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