485 lines
200 KiB
Plaintext
485 lines
200 KiB
Plaintext
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!<arch>
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/ 0 0 0 0 2136 `
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RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ RŽ_ZN110_$LT$core..ops..range..RangeFrom$LT$usize$GT$$u20$as$u20$core..slice..index..SliceIndex$LT$$u5b$T$u5d$$GT$$GT$5index17h5434cfd96a2c0c70E _ZN42_$LT$$RF$T$u20$as$u20$core..fmt..Debug$GT$3fmt17h47a48682ee90e5c8E _ZN4core3cmp3Ord3max17h63c08cfd28ac5040E _ZN4core3ptr9const_ptr33_$LT$impl$u20$$BP$const$u20$T$GT$13is_aligned_to17hc86f2bdfb635c5a8E _ZN4core4sync6atomic11atomic_load17h4320a015026d3214E _ZN4core4sync6atomic12atomic_store17h1bfeafb50957f645E _ZN4core4sync6atomic12atomic_store17he76c33bb70a5c7d4E _ZN4core4sync6atomic28atomic_compare_exchange_weak17h6cb36385b14ae82cE _ZN4core5array98_$LT$impl$u20$core..convert..TryFrom$LT$$RF$$u5b$T$u5d$$GT$$u20$for$u20$$u5b$T$u3b$$u20$N$u5d$$GT$8try_from17ha8e2e704d5641b3aE _ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$12as_ptr_range17hfb0b5dcddc86ab15E _ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$12chunks_exact17hc230211b2a1fd406E _ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$18split_at_unchecked17hc9a39d4fe9fa17d2E _ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$13rchunks_exact17h2018e9f9ae6a6f88E _ZN4core5slice29_$LT$impl$u20$$u5b$T$u5d$$GT$8split_at17h69772d7da5789cd7E _ZN4core5slice4iter20ChunksExact$LT$T$GT$9remainder17hcbab1f4c5650933aE _ZN53_$LT$T$u20$as$u20$core..convert..TryInto$LT$U$GT$$GT$8try_into17h93d0fab019c3fbc0E _ZN63_$LT$I$u20$as$u20$core..iter..traits..collect..IntoIterator$GT$9into_iter17h251c4737d5208f88E _ZN8foldhash15hash_bytes_long17he45131562c2af42aE _ZN98_$LT$core..slice..iter..ChunksExact$LT$T$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$4next17h4dfb0548b4301c35E _ZN8foldhash17hash_bytes_medium17h18196141f79ed527E _ZN99_$LT$core..slice..iter..RChunksExact$LT$T$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$4next17h61673853887fa5d0E _ZN8foldhash4seed10SharedSeed8from_u6417haa19534c7494b036E _ZN8foldhash4seed19gen_per_hasher_seed17h57f74e497165653cE _ZN8foldhash4seed6global10GlobalSeed9init_slow17hc317593a5d5551a6E _ZN8foldhash4seed6global19GLOBAL_SEED_STORAGE17h5197f0c0f23a4411E DW.ref.rust_eh_personality // 66 `
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foldhash-032a5228e2caa585.foldhash.764242f1bae3dc14-cgu.0.rcgu.o/
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lib.rmeta/ 0 0 0 644 84280 `
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ELF · ¸G @ @ GNU À rust
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&E #rustc 1.96.0 (ac68faa20 2026-05-25)ÁíàÄTËŸ ÜJîÄ)'ß\¥! -3d1337db07d0b3aeÁ ¤°ð ¾ä-±($²ï=©Ã -7e98a21bfd32b0edÁ‰W globalÁ4§J ó�¼ˆJ ̇J convenienceÁ\¤&»À|Ž& í fastÁ
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with_seedÁ write_numÁ ¥ writeÁ write_u8Á write_u16Á write_u32Á write_u64Á
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write_u128Á write_usizeÁ finishÁ > ‘ build_hasherÁ #> % randomÁ % fixedÁ %Ÿ )‘ )Ú ,Ÿ .> 0‘ 0Ú qualityÁ 3 333333333 =Ÿ 3?Ê ?Ö ?å ?õ ?… ?• ?¦ ?¸ 3H‘ HÚ 3Kû Kˆ KŸ 3O‘ OÚ 3RŸ 3T‘ TÚ seedÁ W WWWWWWWWW W FIXED_GLOBAL_SEEDÁ W gen_per_hasher_seedÁ c ccc PER_HASHER_NONDETERMINISMÁ W h
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global_randomÁ h global_fixedÁ h from_u64Á k mixÁ k FORCED_ONESÁ WŠ n nnnnn generate_global_seedÁ t n GlobalSeedStorageÁ vº v§ n UNINITÁ n LOCKEDÁ n INITÁ n n GLOBAL_SEED_STORAGEÁ } næ init_slowÁ getÁ W
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ARBITRARY0Á
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ARBITRARY1Á
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ARBITRARY2Á
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ARBITRARY3Á
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ARBITRARY4Á
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ARBITRARY5Á
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ARBITRARY6Á
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ARBITRARY7Á
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ARBITRARY8Á
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ARBITRARY9Á folded_multiplyÁ š hash_bytes_mediumÁ hash_bytes_longÁ
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FoldHasherÁ “ accumulatorÁ “ spongeÁ “
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sponge_lenÁ “ fold_seedÁ “ expand_seedÁ “ expand_seed2Á “ expand_seed3Á
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›ƒ RandomStateÁ � per_hasher_seedÁ � global_seedÁ
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¢ƒ ¤× SeedableRandomStateÁ ¦†
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¦ shared_seedÁ «ƒ ×
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FixedStateÁ ¯†
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SharedSeedÁ Ù seedsÁ Ú W܃ WÞ× n
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GlobalSeedÁ à _no_accidental_unsafe_initÁ nnnäƒ næ×
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¿, ÃÜ ½à 3W…†‡ˆ‰Š‹Œ�Ž��‘’í «Tû% Ù „ü ƒX ü F C This crate provides foldhash, a fast, non-cryptographic, minimallyÁ üGK H DoS-resistant hashing algorithm designed for computational uses such asÁ ü“2 / hashmaps, bloom filters, count sketching, etc.Á Æú üÊ) & When should you **not** use foldhash:Á ôú üøL I - You are afraid of people studying your long-running program's behaviorÁ üÅO L to reverse engineer its internal random state and using this knowledge toÁ ü•H E create many colliding inputs for computational complexity attacks.Á Þú üâH E - You expect foldhash to have a consistent output across versions orÁ ü«P M platforms, such as for persistent file formats or communication protocols.Á 4ü Á üƒH E - You are relying on foldhash's properties for any kind of security.Á üÌD A Foldhash is **not appropriate for any cryptographic purpose**.Á ‘ú ü•N K Foldhash has two variants, one optimized for speed which is ideal for dataÁ üäI F structures such as hash maps and bloom filters, and one optimized forÁ ü®= : statistical quality which is ideal for algorithms such asÁ üì@ = [HyperLogLog](https://en.wikipedia.org/wiki/HyperLogLog) andÁ ü5 2 [MinHash](https://en.wikipedia.org/wiki/MinHash).Á ãú üçO L Foldhash can be used in a `#![no_std]` environment by disabling its defaultÁ ¤· `"std"` feature.Á Ì ú \Ð # UsageÁ Ü ú üà N K The easiest way to use this crate with the standard library [`HashMap`] orÁ ü¯
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I F [`HashSet`] is to import them from `foldhash` instead, along with theÁ üù
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L I extension traits to make [`HashMap::new`] and [`HashMap::with_capacity`]Á ÄÆ work out-of-the-box:Á ß ú \ã ```rustÁ üï ( % use foldhash::{HashMap, HashMapExt};Á ˜ ú üœ let mut hm = HashMap::new();Á ܽ hm.insert(42, "hello");Á <Ù ```Á á ú üå O L You can also avoid the convenience types and do it manually by initializingÁ üµ
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[ X a [`RandomState`](fast::RandomState), for example if you are using a different hash mapÁ ü‘B ? implementation like [`hashbrown`](https://docs.rs/hashbrown/):Á Ôú \ØŒæ Üä use hashbrown::HashMap;Á ü€$ ! use foldhash::fast::RandomState;Á ¥ú ü©> ; let mut hm = HashMap::with_hasher(RandomState::default());Á äè hm.insert("foo", "bar");Á <…¬ç �ú ü‘I F The above methods are the recommended way to use foldhash, which willÁ üÛO L automatically generate a randomly generated hasher instance for you. If youÁ ü«Q N absolutely must have determinism you can use [`FixedState`](fast::FixedState)Á üýI F instead, but note that this makes you trivially vulnerable to HashDoSÁ üÇI F attacks and might lead to quadratic runtime when moving data from oneÁ ì‘ hashmap/set into another:Á ¯ú \³Œæ ü¿" use std::collections::HashSet;Á üâ# use foldhash::fast::FixedState;Á †ú üŠA > let mut hm = HashSet::with_hasher(FixedState::with_seed(42));Á äÌ hm.insert([1, 10, 100]);Á <é¬ç ñú üõL I If you rely on statistical properties of the hash for the correctness ofÁ üÂX U your algorithm, such as in [HyperLogLog](https://en.wikipedia.org/wiki/HyperLogLog),Á ü›D A it is suggested to use the [`RandomState`](quality::RandomState)Á üàN K or [`FixedState`](quality::FixedState) from the [`quality`] module insteadÁ ü¯L I of the [`fast`] module. The latter is optimized purely for speed in hashÁ üü3 0 tables and has known statistical imperfections.Á °ú ü´P M Finally, you can also directly use the [`RandomState`](quality::RandomState)Á ü…K H or [`FixedState`](quality::FixedState) to manually hash items using theÁ üÑ2 / [`BuildHasher`](std::hash::BuildHasher) trait:Á \„Œæ ü� use std::hash::BuildHasher;Á ü°' $ use foldhash::quality::RandomState;Á Øú üÜ. + let random_state = RandomState::default();Á ü‹4 1 let hash = random_state.hash_one("hello world");Á <À¬ç Èú tÌ ## SeedingÁ Ûú üßN K Foldhash relies on a single 8-byte per-hasher seed which should be ideallyÁ ü® B ? be different from each instance to instance, and also a largerÁ üñ C @ [`SharedSeed`] which may be shared by many different instances.Á µ ú ü¹ M J To reduce overhead, this [`SharedSeed`] is typically initialized once andÁ ü‡ P M stored. To prevent each hashmap unnecessarily containing a reference to thisÁ üØ L I value there are three kinds of [`BuildHasher`](core::hash::BuildHasher)sÁ ü¥ : 7 foldhash provides (both for [`fast`] and [`quality`]):Á à ú üä C @ 1. [`RandomState`](fast::RandomState), which always generates aÁ ü¨ a ^ random per-hasher seed and implicitly stores a reference to [`SharedSeed::global_random`].Á üŠ!F C 2. [`FixedState`](fast::FixedState), which by default uses a fixedÁ üÑ!Y V per-hasher seed and implicitly stores a reference to [`SharedSeed::global_fixed`].Á ü«"K H 3. [`SeedableRandomState`](fast::SeedableRandomState), which works likeÁ ü÷"U R [`RandomState`](fast::RandomState) by default but can be seeded in any manner.Á üÍ#R O This state must include an explicit reference to a [`SharedSeed`], and thusÁ ü $O L this struct is 16 bytes as opposed to just 8 bytes for the previous two.Á 3W…†‡ˆ‰Š‹Œ�Ž��‘’í « Ù „147dÄ% ü 4 1 The foldhash implementation optimized for speed.Á $Ì% “�¦¯\\G Åe ‘
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Tí ˆ T:¿Á±³\b¦¨™›†ˆ,¢{}ln]_NP?A|Å Ú üÌN üÛF C Initializes this [`FoldHasher`] with the given per-hasher seed andÁ œ¦ [`SharedSeed`].ÁLÓ èÐ è’ Ú € ñk†
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$ ÄŠ0 Ë&'( ¼�1 ü©0K H Generates a random [`SeedableRandomState`], similar to [`RandomState`].Á4–1 Ë % % Ûp´›3 ü·2I F Generates a fixed [`SeedableRandomState`], similar to [`FixedState`].Á,¢3 Ë % % ”—ü³5P ü¶4F C Generates a [`SeedableRandomState`] with the given per-hasher seedÁ ¼�5 and [`SharedSeed`].ÁLº5 Ð ’ Ë % % Ƙ†
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TÈ Œ W aæT�M à ƒ,Y ±³¢¤, –˜‡‰wygiWYGIü¬# Œ² W ’ü * œ® Ð ƒj”Ñ \æ Dó ü†- Ì� W ¤]¤] V ¦]Á‚] üß3ø¤”&Ü#à | ’ijk üÒ- ü¶K H Returns the globally shared randomly initialized [`SharedSeed`] as usedÁ ü†1 . by [`RandomState`](crate::fast::RandomState).Ál٠Ж h h ÓqüÀ2 üµ< 9 Returns the globally shared fixed [`SharedSeed`] as usedÁ üö/ , by [`FixedState`](crate::fast::FixedState).ÁdÍ Ð– h h Ürüª ( ü›= : Generates a new [`SharedSeed`] from a single 64-bit seed.Á Ý ú üåI F Note that this is somewhat expensive so it is suggested to re-use theÁ ü³ D A [`SharedSeed`] as much as possible, using the per-hasher seed toÁ üü ) & differentiate between hash instances.ÁD· Ð ’ h h
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t œÂ& t <closure_kind>Á u <closure_signature>Á u <upvars>Á u u t u Ð Ð Ð §2Ä«4 Œ²4 n Ð �zÏùÛï{ï wx|Î4 ,Î4 n v v ðÃäç4 $ç4 n v v ÉÇ„�5 4–5 n � „ª5 4°5 n � tÄ5 $Ê5 n � ü®7& Ð üÝ7- œä7 n ÐÃ( ÿÿÿÿÿÿÿ( ý8 } } Ü#|< ‹ €�‚ ¤á< è< ‹ ¢jt€? Lƒ? n §2 žÅüýG' „H ‹ Ж Âkì9”…M p„õ%é1¬°'T¶' Ð ¬Ü'Tâ' Ð ¬ˆ(TŽ( Ð ¬´(Tº( Ð ¬à(Tæ( Ð ¬Œ)T’) Ð ¬¸)T¾) Ð ¬ä)Tê) Ð ¬�*T–* Ð ¬¼*TÂ* Ð üû*/|„+ Ð Ð Ð ÿ-Ã8Ä8üó?,dü? Ð ¿,Ð ì5Ãa4½_4üëESŒîE ƒ ƒÞ7 Ð Ð Ð Ð ‡F ªI˜R,€FÌR’FÚRŸFœ L¨FüÊN†|ÍN „ „Þ7 Ð Ð Ð Ð Ð Ð éN ÓK˜R,âNÌRøNÚR‰O s2ÁšO s3Á«Oœ L¸O¬– üûE B A [`Hasher`] instance implementing foldhash, optimized for speed.Á Áú üÅI F While you can create one directly with [`FoldHasher::with_seed`], youÁ ü�G D most likely want to use [`RandomState`], [`SeedableRandomState`] orÁ ü×- * [`FixedState`] to create [`FoldHasher`]s.Á T¡ Ú ÂCHW
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œ ´â' üë&X U A [`BuildHasher`] for [`fast::FoldHasher`](FoldHasher) that is randomly initialized.Á \í' Ú ’'‰ú2
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¥ %2±%2ô®. üß+K H A [`BuildHasher`] for [`fast::FoldHasher`](FoldHasher) that is randomlyÁ ü«,M J initialized by default, but can also be initialized with a specific seed.Á ù,ú üý,K H This can be useful for e.g. testing, but the downside is that this typeÁ üÉ-F C has a size of 16 bytes rather than the 8 bytes [`RandomState`] is.Á œ¹. Ë N™æ :¹ä §¨¤Ó.|Ó. ¦ ¦ Ð üí. \í. ¦ ¦ Ж ™. Ë î5 î5 î5 Ë î5 î5 ˬ Ù ¬ î5î5 Š ŠË Ë « Ÿ. «
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® S6±S6¬Û: ü�9_ \ A [`BuildHasher`] for [`fast::FoldHasher`](FoldHasher) that always has the same fixed seed.Á ý9ú ü�:; 8 Not recommended unless you absolutely need determinism.Á Tæ: ¼ Ypö›þkº °¤÷:|÷: ¯ ¯ Ð Æ: ¼ ¶: ¶: ¶: ¼ ¶: ¶: ¼´ Ù ´ ¶:¶: Ž Ž¼ ¼ ³ Ì: ³
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¶ ;±;¬Ø ü»G D A [`Hasher`] instance implementing foldhash, optimized for quality.Á ƒú ü‡IŠÁ üÑGÝÁ ü™-®Â Tã ¢ ›/�±·×Ëš ¸üô",ÿ · · ÚÉ> É> ¢º Ù º É>É> ’ ’¢ ¢ ¹ Ð ¹
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[ X A [`BuildHasher`] for [`quality::FoldHasher`](FoldHasher) that is randomly initialized.Á \Ö à
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Ä ÏF±ÏFô¹ üÞN K A [`BuildHasher`] for [`quality::FoldHasher`](FoldHasher) that is randomlyÁ üMÜÊ ûú üÿK¿Ë üËF”Ì œÄ Æ lÆ4aþh— ÆüÞ ,Þ3 Å Å Ë › Æ ™H ™H ™H ! Æ ™H ™H ! ÆÊ Ù Ê ™H™H — —Æ Æ É ¡ É
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Î sI±sI¬Ä üú b _ A [`BuildHasher`] for [`quality::FoldHasher`](FoldHasher) that always has the same fixed seed.Á Ý ú üá ;¾Ñ TÏ ¬ “tÔŒ¿‘!ô мà ,à 3 Ï Ï ¼ #¦ $ ¬ 6M 6M 6M % ¬ 6M 6M % ¬Ô Ù Ô 6M6M › ›¬ ¬ Ó $¬ Ó
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Ø N±N¬å üÆM J A random seed intended to be shared by many different foldhash instances.Á ” ú ü˜[ X This seed is consumed by [`FoldHasher::with_seed`](crate::fast::FoldHasher::with_seed),Á üôX U and [`SeedableRandomState::with_seed`](crate::fast::SeedableRandomState::with_seed).Á ¬ ’ /Á´>{= ÚÔ� ,Œ Ù Ù ´$ ™ Ü#ßR ßR ( ’Ý Ù Ý ßRßR Ÿ Ÿ’ ’ Ü (Ö Ü
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É4ÏFÉ4t É4`É4fÉ4sIÉ4ëÉ4×É4ÝÉ4NÉ4õÉ45É4;É4YSÉ4FÉ4†É4ŒÉ4�YÉ4%,=KRhZ SharedSeed::global_fixedÁ https://docs.rs/hashbrown/Á fast::FixedStateÁ quality::RandomStateÁ »Ü MinHashÁ %https://en.wikipedia.org/wiki/MinHashÁ HashMap::newÁ Ô 3À � � \ core::hash::BuildHasherÁ
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core::hashÁ í SharedSeed::global_randomÁ hashbrownÁ Ï
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çó †ô ¯Ü )https://en.wikipedia.org/wiki/HyperLogLogÁ ¾ô Êô À í � � ó std::hashÁ ¡õ ½õ ædÏ
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fast::RandomStateÁ ïõ çó HyperLogLogÁ œö ¾ô í Ï
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¤ std::hash::BuildHasherÁ � ó ïö « ¡õ Åe“÷ ïõ fast::SeedableRandomStateÁ µ÷ œö quality::FixedStateÁ ä÷ ¤ ïö ó « HashMap::with_capacityÁ “÷ �Êó «ø µ÷ ›ô Õø ¤ ä÷ Ô « Ùôô ˆù \ Ñõ Êó «ø ¦†ô ›ô Õø ÏÜ Ô À Êô ôô ˆù \ � ½õ Ñõ × fast::FoldHasherÁ Ü Ï
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ÅÔ ¤ ó « \ ¦û ‘ - crate::fastÁ SeedableRandomState::with_seedÁ × +crate::fast::SeedableRandomState::with_seedÁ crate::fast::SeedableRandomStateÁ crate::fast::RandomStateÁ � crate::fast::FixedStateÁ Ï
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¤ ó « ¦û "crate::fast::FoldHasher::with_seedÁ crate::fast::FoldHasherÁ Šþ × šþ Âþ òþ ¦—ÿ ¹ÿ Ï
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¹ÿ ¯¤ ó óÿ « ¦û š€ ÃLð ì Š � Ø™ºã à é æ ³ Œ"�"“"–"Û Þ ã ŒMÃMÐLÇLùMÌìÍì“íµßíßÅe¢eÃLð ì Š � Ø™ºã à é æ ³ Œ"�"“"–"Û Þ ã ŒMÃMÐLÇLùMÌìÍì“íµßíßÅe¢eÃLð ì Š � Ø™ºã à é æ ³ Œ"�"“"–"Û Þ ã ŒMÃMÐLÇLùMÌìÍì“íµßíßÃLð ì Š � Ø™ºã à é æ ³ Œ"�"“"–"Û Þ ã ŒMÃMÐLÇLùMÌìÍì“íµßíß RandomState per_hasher_seed global_seed SeedableRandomState shared_seed
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