From: Junio C Hamano <gitster@pobox•com>
To: Ezekiel Newren <ezekielnewren@gmail•com>
Cc: "brian m. carlson" <sandals@crustytoothpaste•net>,
git@vger•kernel.org, Patrick Steinhardt <ps@pks•im>
Subject: Re: [PATCH 05/14] rust: add a hash algorithm abstraction
Date: Wed, 29 Oct 2025 07:32:01 -0700 [thread overview]
Message-ID: <xmqq4irhbwym.fsf@gitster.g> (raw)
In-Reply-To: <xmqq8qgtbzyi.fsf@gitster.g> (Junio C. Hamano's message of "Wed, 29 Oct 2025 06:27:17 -0700")
Junio C Hamano <gitster@pobox•com> writes:
>>> These cases for "None" surprised me a bit; I would have expected us
>>> to error out when given an algorithm we do not recognise.
>>
>> I think _Result_ would be more appropriate here.
>
> Perhaps. But the Option/Result was not what I was suprised about.
> ...
> Perhaps as_mut_slice() side is justifiable (an uninitialized
> instance of ObjectID is filled by getting the full self.hash and
> filling it, plus filling the algo), but the same explanation would
> not apply on the read-only side.
Rethinking, I guess the "why doesn't it fail in the None case?" is
exactly the same question as "why Option, not Result?" as you
suggested. Sorry for the noise.
next prev parent reply other threads:[~2025-10-29 14:32 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-27 0:43 [PATCH 00/14] SHA-1/SHA-256 interoperability, part 2 brian m. carlson
2025-10-27 0:43 ` [PATCH 01/14] repository: require Rust support for interoperability brian m. carlson
2025-10-28 9:16 ` Patrick Steinhardt
2025-10-27 0:43 ` [PATCH 02/14] conversion: don't crash when no destination algo brian m. carlson
2025-10-27 0:43 ` [PATCH 03/14] hash: use uint32_t for object_id algorithm brian m. carlson
2025-10-28 9:16 ` Patrick Steinhardt
2025-10-28 18:28 ` Ezekiel Newren
2025-10-28 19:33 ` Junio C Hamano
2025-10-28 19:58 ` Ezekiel Newren
2025-10-28 20:20 ` Junio C Hamano
2025-10-30 0:23 ` brian m. carlson
2025-10-30 1:58 ` Collin Funk
2025-11-03 1:30 ` brian m. carlson
2025-10-29 0:33 ` brian m. carlson
2025-10-29 9:07 ` Patrick Steinhardt
2025-10-27 0:43 ` [PATCH 04/14] rust: add a ObjectID struct brian m. carlson
2025-10-28 9:17 ` Patrick Steinhardt
2025-10-28 19:07 ` Ezekiel Newren
2025-10-29 0:42 ` brian m. carlson
2025-10-28 19:40 ` Junio C Hamano
2025-10-29 0:47 ` brian m. carlson
2025-10-29 0:36 ` brian m. carlson
2025-10-29 9:08 ` Patrick Steinhardt
2025-10-30 0:32 ` brian m. carlson
2025-10-27 0:43 ` [PATCH 05/14] rust: add a hash algorithm abstraction brian m. carlson
2025-10-28 9:18 ` Patrick Steinhardt
2025-10-28 17:09 ` Ezekiel Newren
2025-10-28 20:00 ` Junio C Hamano
2025-10-28 20:03 ` Ezekiel Newren
2025-10-29 13:27 ` Junio C Hamano
2025-10-29 14:32 ` Junio C Hamano [this message]
2025-10-27 0:43 ` [PATCH 06/14] hash: add a function to look up hash algo structs brian m. carlson
2025-10-28 9:18 ` Patrick Steinhardt
2025-10-28 20:12 ` Junio C Hamano
2025-11-04 1:48 ` brian m. carlson
2025-11-04 10:24 ` Junio C Hamano
2025-10-27 0:43 ` [PATCH 07/14] csum-file: define hashwrite's count as a uint32_t brian m. carlson
2025-10-28 17:22 ` Ezekiel Newren
2025-10-27 0:43 ` [PATCH 08/14] write-or-die: add an fsync component for the loose object map brian m. carlson
2025-10-27 0:43 ` [PATCH 09/14] hash: expose hash context functions to Rust brian m. carlson
2025-10-29 16:32 ` Junio C Hamano
2025-10-30 21:42 ` brian m. carlson
2025-10-30 21:52 ` Junio C Hamano
2025-10-27 0:44 ` [PATCH 10/14] rust: add a build.rs script for tests brian m. carlson
2025-10-28 9:18 ` Patrick Steinhardt
2025-10-28 17:42 ` Ezekiel Newren
2025-10-29 16:43 ` Junio C Hamano
2025-10-29 22:10 ` Ezekiel Newren
2025-10-29 23:12 ` Junio C Hamano
2025-10-30 6:26 ` Patrick Steinhardt
2025-10-30 13:54 ` Junio C Hamano
2025-10-31 22:43 ` Ezekiel Newren
2025-11-01 11:18 ` Junio C Hamano
2025-10-27 0:44 ` [PATCH 11/14] rust: add functionality to hash an object brian m. carlson
2025-10-28 9:18 ` Patrick Steinhardt
2025-10-29 0:53 ` brian m. carlson
2025-10-29 9:07 ` Patrick Steinhardt
2025-10-28 18:05 ` Ezekiel Newren
2025-10-29 1:05 ` brian m. carlson
2025-10-29 16:02 ` Ben Knoble
2025-10-27 0:44 ` [PATCH 12/14] rust: add a new binary loose object map format brian m. carlson
2025-10-28 9:18 ` Patrick Steinhardt
2025-10-29 1:37 ` brian m. carlson
2025-10-29 9:07 ` Patrick Steinhardt
2025-10-29 17:03 ` Junio C Hamano
2025-10-29 18:21 ` Junio C Hamano
2025-10-27 0:44 ` [PATCH 13/14] rust: add a small wrapper around the hashfile code brian m. carlson
2025-10-28 18:19 ` Ezekiel Newren
2025-10-29 1:39 ` brian m. carlson
2025-10-27 0:44 ` [PATCH 14/14] object-file-convert: always make sure object ID algo is valid brian m. carlson
2025-10-29 20:07 ` [PATCH 00/14] SHA-1/SHA-256 interoperability, part 2 Junio C Hamano
2025-10-29 20:15 ` Junio C Hamano
2025-11-11 0:12 ` Ezekiel Newren
2025-11-14 17:25 ` Junio C Hamano
2025-11-14 21:11 ` Junio C Hamano
2025-11-17 6:56 ` Junio C Hamano
2025-11-17 22:09 ` brian m. carlson
2025-11-18 0:13 ` Junio C Hamano
2025-11-19 23:04 ` brian m. carlson
2025-11-19 23:24 ` Junio C Hamano
2025-11-19 23:37 ` Ezekiel Newren
2025-11-20 19:52 ` Ezekiel Newren
2025-11-20 23:02 ` brian m. carlson
2025-11-20 23:11 ` Ezekiel Newren
2025-11-20 23:14 ` Junio C Hamano
2025-11-17 22:16 ` [PATCH v2 00/15] " brian m. carlson
2025-11-17 22:16 ` [PATCH v2 01/15] repository: require Rust support for interoperability brian m. carlson
2025-11-17 22:16 ` [PATCH v2 02/15] conversion: don't crash when no destination algo brian m. carlson
2025-11-17 22:16 ` [PATCH v2 03/15] hash: use uint32_t for object_id algorithm brian m. carlson
2025-11-17 22:16 ` [PATCH v2 04/15] rust: add a ObjectID struct brian m. carlson
2025-11-17 22:16 ` [PATCH v2 05/15] rust: add a hash algorithm abstraction brian m. carlson
2025-11-17 22:16 ` [PATCH v2 06/15] hash: add a function to look up hash algo structs brian m. carlson
2025-11-17 22:16 ` [PATCH v2 07/15] rust: add additional helpers for ObjectID brian m. carlson
2025-11-17 22:16 ` [PATCH v2 08/15] csum-file: define hashwrite's count as a uint32_t brian m. carlson
2025-11-17 22:16 ` [PATCH v2 09/15] write-or-die: add an fsync component for the object map brian m. carlson
2025-11-17 22:16 ` [PATCH v2 10/15] hash: expose hash context functions to Rust brian m. carlson
2025-11-17 22:16 ` [PATCH v2 11/15] rust: add a build.rs script for tests brian m. carlson
2025-11-17 22:16 ` [PATCH v2 12/15] rust: add functionality to hash an object brian m. carlson
2025-11-17 22:16 ` [PATCH v2 13/15] rust: add a new binary object map format brian m. carlson
2025-11-17 22:16 ` [PATCH v2 14/15] rust: add a small wrapper around the hashfile code brian m. carlson
2025-11-17 22:16 ` [PATCH v2 15/15] object-file-convert: always make sure object ID algo is valid brian m. carlson
2026-02-07 20:04 ` [PATCH v3 00/16] SHA-1/SHA-256 interoperability, part 2 brian m. carlson
2026-02-07 20:04 ` [PATCH v3 01/16] repository: require Rust support for interoperability brian m. carlson
2026-02-07 20:04 ` [PATCH v3 02/16] conversion: don't crash when no destination algo brian m. carlson
2026-02-07 20:04 ` [PATCH v3 03/16] hash: use uint32_t for object_id algorithm brian m. carlson
2026-02-07 20:04 ` [PATCH v3 04/16] rust: add a ObjectID struct brian m. carlson
2026-02-07 20:04 ` [PATCH v3 05/16] rust: add a hash algorithm abstraction brian m. carlson
2026-02-07 20:04 ` [PATCH v3 06/16] hash: add a function to look up hash algo structs brian m. carlson
2026-02-07 20:04 ` [PATCH v3 07/16] rust: add additional helpers for ObjectID brian m. carlson
2026-02-07 20:04 ` [PATCH v3 08/16] csum-file: define hashwrite's count as a uint32_t brian m. carlson
2026-02-07 20:04 ` [PATCH v3 09/16] write-or-die: add an fsync component for the object map brian m. carlson
2026-02-07 20:04 ` [PATCH v3 10/16] hash: expose hash context functions to Rust brian m. carlson
2026-02-07 20:04 ` [PATCH v3 11/16] rust: fix linking binaries with cargo brian m. carlson
2026-02-07 20:04 ` [PATCH v3 12/16] rust: add a build.rs script for tests brian m. carlson
2026-02-07 20:04 ` [PATCH v3 13/16] rust: add functionality to hash an object brian m. carlson
2026-02-07 20:04 ` [PATCH v3 14/16] rust: add a new binary object map format brian m. carlson
2026-02-07 20:04 ` [PATCH v3 15/16] rust: add a small wrapper around the hashfile code brian m. carlson
2026-02-07 20:04 ` [PATCH v3 16/16] object-file-convert: always make sure object ID algo is valid brian m. carlson
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