2756 lines
653 KiB
Plaintext
2756 lines
653 KiB
Plaintext
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rust
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Ü2
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#rustc 1.96.0 (ac68faa20 2026-05-25)ÁÀ뉊 ]!ÜÛê(¹Þ—šên -5be7b69c3ff7b5b8Á íàÄTËŸ ÜJîÄ)'ß\¥! -3d1337db07d0b3aeÁ ¤²XctÔ'ÐÓ©z¨É½Ó -a4945860e1c53b00Á ¤°ð ¾ä-±($²ï=©Ã -7e98a21bfd32b0edÁ–�òÖÀH•‘P IÓHã#£ -055f30b747f859b6Á rustc_std_workspace_coreÁCçß^ò½èÝ$Çÿ+Cé -c4878ee60b2242c9Á ŸÃï+Ñ]ŠqB<ÏïW# -8dd1dd90e70d0b6aÁ miniz_oxideÁ€š»J(P>àö÷g\K -1eb618da2918ab7fÁ adler2ÁÆ;+Þ®5¥ÌýÝ°¦ÛLˆ -f7919172d268e069Á hashbrownÁPäV9ÒÆèÜ�"ÊÖVŽ\ -0fc2184a5da6723aÁ rustc_std_workspace_allocÁs&ØòØy¯s•bæ!‰ýŠ -97e4bf30be240674Á
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std_detectÁhŠBîÙºÌI®Ë�Å�š -9dbbf8346ba7ac8bÁ rustc_demangleÁûë9´Ç×@Œ�’ùXFº -f33013f239bf9f14Á cfg_ifÁÜLh�ž§Œaã¯>� -0a71c8f33a838301Á addr2lineÁ׎Þ!]8V$É@@T· -e618e6be60e87ba2Á gimliÁ¸
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°µ~Î1‹Ñt ðÁ€w -1f7768a68858f670Á objectÁ
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áPÃ?À¶¼QHJ¥� -914cd6a4dbe590d1Á memchrÁ›º«8Ór2Ù $¨ûib‚ -cf21ca6f2bb15dcdÁë
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‹ás «LÖ€îâƒ×ɯŒ -ee6f3747e38367f0Á tokioÁ,¿¢¨˜É0!ñ?-…”¼9 -3beca82a6f76b5d4Á pin_project_liteÁ·x¼+Ä`·á¨›�t—¸Íœ -2dc344ecc91b59efÁ mioÁGù�j0ðÔ·â"FÆ#0Q -3545320490828222Á –æ\‹±Ôcd�-»ùÀTƒ -f86f80b348d33b13Á bytesÁ�`²['3_ ²µÆ=üå¥ -d4f44708ed5da7b6Á socket2ÁsT›¸n>~R�Ê1G/R -c161f09f0083d1e0Á futures_coreÁÆöc$Ž³–º¾v¸dK -ac1e9cdb826f83c0Á … randÁ$¯³ loomÁ $‘³ BroadcastStreamRecvErrorÁĦ»ç€ß
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broadcastÁLÜ»ç€ß
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BroadcastStreamÁ|þ»ç&(
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watchÁ,˜»ç?A
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WatchStreamÁ\²»ç^`
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signal_unixÁ\ù» signalÁ�¥
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SignalStreamÁdÀ»ó #%
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signal_windowsÁtø»ó EG
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CtrlCStreamÁ\Æ»ó df
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CtrlBreakStreamÁ|Ó»ó ‡‰
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tcp_listenerÁdØ» netÁxÙ
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TcpListenerStreamÁŒ–»
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(*
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unix_listenerÁlÓ»
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IK
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UnixListenerStreamÁ”ž»
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oq
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splitÁ,Ì» io-utilÁ˜ �
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SplitStreamÁ\滫"$
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linesÁ,ü»«;=
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LinesStreamÁ\– »«Z\ À macrosÁ cfg_fsÁ cfg_io_utilÁ cfg_netÁ cfg_timeÁ cfg_syncÁ
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cfg_signalÁ wrappersÁ
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errorsÁ
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mpsc_boundedÁ ¥ æ
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into_innerÁ closeÁ ¥ › poll_nextÁ size_hintÁ ¥ É ¥ as_mutÁ #¥ #÷
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mpsc_unboundedÁ ' '''''' .¥ .æ .æ .÷ '3¥ 3› 3• 3¥ '8¥ 8É ';¥ ;Ò '>¥ >÷
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stream_extÁ B BB£ E EEEEEEEEE O 'aÁ O StÁ O— Oæ ETí T— T° TŠ BBº Z ZZZZZZZZZ dä dí d— dæ Zií i— i° iŠ BB chainÁ o oooooooo x¥ x¦ xæ o|¥ |¦ |› |• € |¥ BB collectÁ „ „„„„„„„„„ „
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„ „
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FromStreamÁ ‘¥ „ “¥ “¦ “æ „—¥ —¦ —° —Š › „„ž InternalCollectionÁ ž
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initializeÁ ž extendÁ ž finalizeÁ „£¥ „¥¥ ¥Â ¥Ü ¥î ¥ü „«¥ „¥ Â Ü î ü „³¥ „ µ¥ µÂ µÜ µî µü „
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»¥ »¦ »– „ ¿¥ ¿¦ ¿– ¿Â ¿Ü ¿î ¿ü „ sealedÁ Ç FromStreamPrivÁ È¥ È ÈÜ Èî Èü Ç InternalÁ Î
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BBBB filterÁ Ó ÓÓÓÓÓÓÓÓ Üí Ü— Ü× Óàí à— àæ Óäí ä— ä› ä• ä¥ BB
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filter_mapÁ ë ëëëëëëëë ôí ô— ô× ëøí ø— øæ ëüí ü— ü¥ ü› ü• ü¥ B B foldÁ „ „„„„„„„„„ Ží Ž“ Ž— Žæ „“í ““ “— “° “Š B
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B fuseÁ š ššššššš ¢¥ ¢æ š¥¥ ¥› ¥• ¥¥ B BØ « ««««««« ³í ³— ³× «·í ·— ·æ «»í »— »¥ »› »• À Á »¥ B B map_whileÁ Å ÅÅÅÅÅÅÅ Íí Í— Í× ÅÑí Ñ— Ñæ ÅÕí Õ— Õ¥ Õ› Õ• Ú Õ¥ B
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B mergeÁ Þ ÞÞÞÞÞÞÞ æ¥ æ¦ ææ Þê¥ ê¦ ê› ê• ê¥ Þ• ð¥ ð¦ BBó ô ôôôôôôôô ýä ýí ýæ ô�í �° �Š BB skipÁ † †††††††† �í �× †’í ’æ †•í •› •• •¥ ™ BB
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skip_whileÁ œ œœœœœœœœ ¥í ¥— ¥× œ©í ©— ©æ œí — › • ¥ BB takeÁ ´ ´´´´´´´´ ½í ½× ´Àí Àæ ´Ãí Û Õ Æ Ã¥ BB
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take_whileÁ Ê ÊÊÊÊÊÊÊ Òí Ò— Ò× ÊÖí Ö— Öæ ÊÚí Ú— Ú› Ú• Þ ß Ú¥ BB thenÁ ã ãããããããã ìí ì FutÁ ì— ì× ãñí ñ¾) ñ— ñæ ãöí ö— ö¾) ö› ö• ö¥ ü BB try_nextÁ ÿ ÿÿÿÿÿÿÿÿÿ ‰ä ‰í ‰æ ÿ�¥ �– �í �° �Š BB peekableÁ ” ”””””””” �¥ �æ � peekÁ ”£¥ £› £• BB StreamExtÁ ¨ó ¨»* ª¥ ª– ¨Ø ¥ — ¨í °¥ °— ¨ý( ³— ³¾) ¨˜" ¶¦ ¨€ ¸— ¨ º¥ º— ¨Ú ¨É& ¨Ô' ¿— ¨š$ ¨¥% — ¨£ Ä— ¨º Æ— ¨— Ȧ ¨Ì Ê“ Ê— ¨Œ Í¥ ¨ timeoutÁ ¨ timeout_repeatingÁ ¨ throttleÁ ¨ chunks_timeoutÁ ¨Å+ B Ôí B merge_size_hintsÁ adaptersÁ Ú ÚÚÚÚÚÚÚÚÚ Ú
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Ú Ú Ú
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emptyÁ é éééééé ð¥ éò¥ éô¥ éâ0 ö¥ éø¥ ø› ø• ø¥ ù € €€€€€ †š €ù ˆš €Šš Š› Š• Š¥ onceÁ ’ ’’’’’’’’ ›š ’â2 �¥ ’Ÿ¥ Ÿ› Ÿ• Ÿ¥
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pendingÁ § §§§§§§ ®¥ §°¥ §²¥ §ã3 ´¥ §¶¥ ¶› ¶• ¶¥
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stream_mapÁ ¾ ¾¾¾¾¾¾¾¾¾ Èœ ȧ Èù Ë Èú Í Èæ È
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with_capacityÁ È keysÁ Ñ Ñ È¼ Ô Ô È
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values_mutÁ × × È capacityÁ È‘ È is_emptyÁ È clearÁ È insertÁ È removeÁ ߢ È contains_keyÁ ᢠ¾ãœ 㧠ã poll_next_entryÁ ¾çœ ç§ ç> ¾ëœ ë§ ë next_manyÁ î î ð ë poll_next_manyÁ ¾óœ ó§ ó› ó• ó¥ ¾ùœ ù§ ùù ü¥ ¾þœ þ§ þî �¥ ¾•
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ƒ ƒ¢
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…•
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† †††† COUNTERÁ † seedÁ ƒ �æ �
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fastrand_nÁ � fastrandÁ ƒ thread_rng_nÁ ‘ stream_closeÁ ” ”””””” ›¤ ›æ ›æ ”Ÿ¤ Ÿ› Ÿ• ¢ Ÿ¥ ¤ ReceiverStreamÁ ¨¥ ¨ innerÁ «¥ «× ' UnboundedReceiverStreamÁ ®¥ ®ÿ; '±¥ ±×
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intervalÁ ´ ´´´´´´´´ ½æ ½æ ´À› À• À¥ ´ÄÉ ´ÆÒ
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´ IntervalStreamÁ Éÿ; ´Ë×
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read_dirÁ Í ÍÍÍÍÍÍÍÍÍ ×æ ×æ ÍÚ› Ú• ÍÝÉ ÍßÒ
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Í
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ReadDirStreamÁ âÿ; Íä× E AllFutureÁ æä æí æ— æ streamÁ æ± æ _pinÁ Eíä íí í— í× E ò óä óí ó— ò __assert_not_repr_packedÁ ÷ä ÷í ÷— ò
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ProjectionÁ û '__pinÁ ûä ûí û— ûê? û± û€@ ò
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ProjectionRefÁ ƒ�A ƒä ƒí ƒ— ƒê? ƒ± ƒ€@ ó projectÁ ‹�A ó project_refÁ ��A ò __OriginÁ ��A �ä �í �— � __dummy_lifetimeÁ �ê? �± �€@ ò˜�A ˜ä ˜í ˜— ò MustNotImplDropÁ òž¥ ò ä í — Z AnyFutureÁ ¤ä ¤í ¤— ¤ê? ¤± ¤€@ Z«ä «í «— «× Z ° ±ä ±í ±— °Ó@ µä µí µ— °‹A ¹�A ¹ä ¹í ¹— ¹ê? ¹± ¹€@ °ÛA Á�A Áä Áí Á— Áê? Á± Á€@ ±¨B É�A ±¿B Ë�A °ÚB Í�A Íä Íí Í— ÍŠC Íê? ͱ Í€@ °Ö�A Öä Öí Ö— °ßC °Ü¥ °Þä Þí Þ— o ChainÁ ⥠⦠⬠â o ç è¥ è¦ çÓ@ ë¥ ë¦ ç‹A î�A î¥ î¦ î¬ î çÛA ô�A ô¥ ô¦ ô¬ ô è¨B ú�A è¿B ü�A çÚB þ�A þ¥ þ¦ þŠC þ¬ þ ç…�A …¥ …¦ çßC 犥 猥 Œ¦ „ CollectÁ �¥ �¦ �” �ê? �
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collectionÁ � _outputÁ �€@ „ —¥ —¦ —” —× „ œ �¥ �¦ �” œÓ@ ¡¥ ¡¦ ¡” œ‹A ¥�A ¥¥ ¥¦ ¥” ¥ê? ¥“K ¥¥K ¥€@ œÛA ®�A ®¥ ®¦ ®” ®ê? ®“K ®¥K ®€@ �¨B ·�A �¿B ¹�A œÚB »�A »¥ »¦ »” »ŠC »ê? »“K »¥K »€@ œÅ�A Å¥ Ŧ Å” œßC œË¥ œÍ¥ ͦ Í” Ó FilterÁ Ñí Ñ— Ñê? ѱ Ó Ö ×í ×— ÖÓ@ Úí Ú— Ö‹A Ý�A Ýí Ý— Ýê? ݱ ÖÛA ã�A ãí ã— ãê? 㱠רB é�A ׿B ë�A ÖÚB í�A íí í— íŠC íê? í± Öô�A ôí ô— ÖßC Öù¥ Öûí û— ë FilterMapÁ þí þ— þê? þ± ë ƒ „ í „ — ƒ Ó@ ‡ í ‡ — ƒ ‹A Š �A Š í Š — Š ê? Š ± ƒ ÛA � �A � í � — � ê? � ± „ ¨B – �A „ ¿B ˜ �A ƒ ÚB š �A š í š — š ŠC š ê? š ± ƒ ¡ �A ¡ í ¡ — ƒ ßC ƒ ¦ ¥ ƒ ¨ í ¨ — „
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FoldFutureÁ « í « “ « — « ê? « accÁ « ± « €@ „³ í ³ “ ³ — ³ × „ ¸ ¹ í ¹ “ ¹ — ¸ Ó@ ½ í ½ “ ½ — ¸ ‹A Á �A Á í Á “ Á — Á ê? Á óT Á ± Á €@ ¸ ÛA Ê �A Ê í Ê “ Ê — Ê ê? Ê óT Ê ± Ê €@ ¹ ¨B Ó �A ¹ ¿B Õ �A ¸ ÚB × �A × í × “ × — × ŠC × ê? × óT × ± × €@ ¸ á �A á í á “ á — ¸ ßC ¸ ç ¥ ¸ é í é “ é — š FuseÁ í ¥ í ê? šð ¥ ð × š ó ô ¥ ó Ó@ ö ¥ ó ‹A ø �A ø ¥ ø ê? ó ÛA ü �A ü ¥ ü ê? ô ¨B €
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�A ô ¿B ‚
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�A ó ÚB „
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�A „
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¥ „
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ê? ó ‰
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�A ‰
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¥ ó ßC ó �
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¥ ó �
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¥ « MapÁ ‘
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|
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|
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|
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. assert_eq!(stream.next().await, Some(0));Á ü¿ƒ.
|
|||
|
|
+ assert_eq!(stream.next().await, None);Á üòƒ1
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. assert_eq!(stream.next().await, Some(2));Á ü¨„.
|
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ÅÑ Û„
|
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ú üã„$
|
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! // however, once it is fusedÁ üŒ…'
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|
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ú üÀ…1
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|
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|
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: // it will always return `None` after the first time.Á üó†.
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|
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ú üÚ‰I
|
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F Once `n` items have been yielded from this stream then it will alwaysÁ ü¨Š#
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return that the stream is done.Á Њ
|
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|
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/ let mut stream = stream::iter(1..=10).take(3);Á ÅŒ
|
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ú üÍŒ-
|
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|
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* assert_eq!(Some(1), stream.next().await);Á üÿŒ-
|
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* assert_eq!(Some(2), stream.next().await);Á ü±�-
|
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* assert_eq!(Some(3), stream.next().await);Á üã�*
|
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' assert_eq!(None, stream.next().await);Á <’Ž
|
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< Take elements from this stream while the provided predicateÁ ¼ß�
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resolves to `true`.Á û�
|
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|
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= returns false it will always return that the stream is done.Á å‘
|
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|
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ú ü£“B
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|
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mo ü¶›D
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üù–B
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? Creates a new stream that will skip the `n` first items of theÁ ´À—
|
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underlying stream.Á Û—
|
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|
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|
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ú ü™™2
|
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/ let mut stream = stream::iter(1..=10).skip(7);Á Й
|
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|
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ú üØ™-
|
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|
|
* assert_eq!(Some(8), stream.next().await);Á üŠš-
|
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|
|
* assert_eq!(Some(9), stream.next().await);Á ü¼š.
|
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|
|
+ assert_eq!(Some(10), stream.next().await);Á üïš*
|
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ðÚ <ž›
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ü§œI
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F Skip elements from the underlying stream while the provided predicateÁ ¼õœ
|
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¢Ý ‘�
|
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L This function, like [`Iterator::skip_while`], will ignore elements from theÁ üí�H
|
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§Þ üºž<
|
|||
|
|
9 returns false, the rest of the elements will be yielded.Á ûž
|
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|
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ú üƒŸ?
|
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|
|
< [`Iterator::skip_while`]: std::iter::Iterator::skip_while()Á ÇŸ
|
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|
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|
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㢠üý J
|
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G let mut stream = stream::iter(vec![1,2,3,4,1]).skip_while(|x| *x < 3);Á Ì¡
|
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|
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ú üÔ¡-
|
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|
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* assert_eq!(Some(4), stream.next().await);Á ü¸¢-
|
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ÈÙ üê¢*
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ðÚ <™£
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Ï¥T´£
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»�û² ò ò Îh õ ê? œ ö ÷h œ ¶bÖå)•¢ß»�û² ¨— à à ¨ ¸³ ¿£
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mo ü¥±y
|
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üÛ¤=
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: Tests if every element of the stream matches a predicate.Á �¥
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ú ”¥¥
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¥á ¼¥
|
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|
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ú lÄ¥
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|
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Ìá üÖ¥-
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* async fn all<F>(&mut self, f: F) -> bool;Á <ˆ¦
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Ï¥ ”¦
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ú üœ¦F
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|
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C `all()` takes a closure that returns `true` or `false`. It appliesÁ üç¦F
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|
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C this closure to each element of the stream, and if they all returnÁ ü²§A
|
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|
|
> `true`, then so does `all`. If any of them return `false`, itÁ üø§4
|
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|
|
1 returns `false`. An empty stream returns `true`.Á ±¨
|
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|
|
ú ü¹¨H
|
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|
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E `all()` is short-circuiting; in other words, it will stop processingÁ ü†©J
|
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|
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G as soon as it finds a `false`, given that no matter what else happens,Á üÕ©$
|
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|
|
! the result will also be `false`.Á þ©
|
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|
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ú ü†ª#
|
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|
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An empty stream returns `true`.Á ®ª
|
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|
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ú t¶ª
|
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|
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Íç ɪ
|
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|
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ú „Ѫ
|
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|
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|
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Basic usage:Á æª
|
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|
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ú <îª
|
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|
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Ï¥ üúª/
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«£ ¼®«
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㣠üÊ«2
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㢠�¬
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ú ´‰¬
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let a = [1, 2, 3];Á ¤¬
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ú ü¬¬4
|
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|
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1 assert!(stream::iter(&a).all(|&x| x > 0).await);Á å¬
|
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|
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ú üí¬5
|
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|
|
2 assert!(!stream::iter(&a).all(|&x| x > 2).await);Á <§
|
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¿¥ <³
|
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|
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Ï¥ ¿
|
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ú üÇ"
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Stopping at the first `false`:Á î
|
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ú <ö
|
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Ï¥ ü‚®/
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«£ ¼¶®
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㣠üÒ®2
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㢠‰¯
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ú ´‘¯
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ú ü´¯$
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! let mut iter = stream::iter(&a);Á ݯ
|
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ú üå¯*
|
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|
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' assert!(!iter.all(|&x| x != 2).await);Á ”°
|
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|
|
ú üœ°;
|
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|
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8 // we can still use `iter`, as there are more elements.Á üÜ°,
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|
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|
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KM üܾy
|
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üв;
|
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8 Tests if any element of the stream matches a predicate.Á �³
|
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ú ”˜³
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¥á ¯³
|
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|
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ú l·³
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|
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Ìá üɳ-
|
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* async fn any<F>(&mut self, f: F) -> bool;Á <û³
|
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|
|
Ï¥ ‡´
|
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ú ü�´F
|
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C `any()` takes a closure that returns `true` or `false`. It appliesÁ üÚ´I
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|
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F this closure to each element of the stream, and if any of them returnÁ ü¨µ@
|
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|
|
= `true`, then so does `any()`. If they all return `false`, itÁ ¤íµ
|
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|
|
returns `false`.Á †¶
|
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ú üŽ¶H
|
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E `any()` is short-circuiting; in other words, it will stop processingÁ üÛ¶I
|
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F as soon as it finds a `true`, given that no matter what else happens,Á ü©·#
|
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|
|
the result will also be `true`.Á Ñ·
|
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ú üÙ·$
|
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! An empty stream returns `false`.Á ‚¸
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ú „Š¸
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“÷ Ÿ¸
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ú <§¸
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Ï¥ ü³¸/
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«£ ¼ç¸
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㣠üƒ¹2
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ú ´Â¹
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�ø ݹ
|
|||
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ú üå¹4
|
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|
1 assert!(stream::iter(&a).any(|&x| x > 0).await);Á žº
|
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ú ü¦º5
|
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|
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2 assert!(!stream::iter(&a).any(|&x| x > 5).await);Á <àº
|
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¿¥ <ìº
|
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Ï¥ øº
|
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|
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ú ü€»!
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Stopping at the first `true`:Á ¦»
|
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ú <®»
|
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Ï¥ üº»/
|
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«£ ¼î»
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㣠üŠ¼2
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ú ´É¼
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ú ü�½)
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& assert!(iter.any(|&x| x != 2).await);Á ˽
|
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|
|
ú üÓ½;
|
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|
|
þû ü“¾,
|
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|
|
) assert_eq!(iter.next().await, Some(&2));Á <ľ
|
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™ ™»�û² ¤ ¤ ŸD ¨ê? Z ©± Z ª€@ Z qý¢e|ÿ‡
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|
|||
|
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D Combine two streams into one by first returning all values from theÁ üÓÀ8
|
|||
|
|
5 first stream then all values from the second stream.Á �Á
|
|||
|
|
ú ü˜ÁJ
|
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G As long as `self` still has values to emit, no values from `other` areÁ üçÁ$
|
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! emitted, even if some are ready.Á �Â
|
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ú t˜Â
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ú <³Â
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ú üþÂ/
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㣠üÎÃ*
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|
|
' let one = stream::iter(vec![1, 2, 3]);Á üýÃ*
|
|||
|
|
' let two = stream::iter(vec![4, 5, 6]);Á ¬Ä
|
|||
|
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ú ü´Ä$
|
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|
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! let mut stream = one.chain(two);Á ÝÄ
|
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ú üåÄ-
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òè ü—Å-
|
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—ê <ÀÇ
|
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|
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|
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üüÈE
|
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|
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B A combinator that applies a function to every element in a streamÁ üÆÉ$
|
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! producing a single, final value.Á ïÉ
|
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ú ”÷É
|
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¥á ŽÊ
|
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ú l–Ê
|
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Ìá ü¨Ê2
|
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|
|
/ async fn fold<B, F>(self, init: B, f: F) -> B;Á <ßÊ
|
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|
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Ï¥ ëÊ
|
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ú tóÊ
|
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Íç „†Ë
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Ï¥ ü§Ë/
|
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|
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«£ ¼ÛË
|
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|
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㣠ü÷Ë*
|
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|
|
' use tokio_stream::{self as stream, *};Á ¦Ì
|
|||
|
|
ú ü®Ì*
|
|||
|
|
' let s = stream::iter(vec![1u8, 2, 3]);Á üÝÌ0
|
|||
|
|
- let sum = s.fold(0, |acc, x| acc + x).await;Á ’Í
|
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|
|
ú ¼šÍ
|
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|
|
assert_eq!(sum, 6);Á <¶Í
|
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|
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|
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Ï¥$ÑÍ
|
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»�¦µØ¥ « « ÁT ¯ ê? „ ° óT „ ± ± „ ² €@ „ bìMŒ‡žÛ»�¦µØ¥ ¨“ Ë — Ì Ì Ë ¨ æË ÖÍ
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|
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|
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|
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async fn collect<T>(self) -> T;Á <¬Ð
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ú üÀÐL
|
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|
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|
|||
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|
9 supported, including [`Vec`], [`String`], and [`Bytes`].Á šÒ
|
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|
? [`Bytes`]: https://docs.rs/bytes/0.6.0/bytes/struct.Bytes.htmlÁ éÒ
|
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ú tñÒ
|
|||
|
|
# `Result`Á „Ó
|
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|
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ú üŒÓJ
|
|||
|
|
G `collect()` can also be used with streams of type `Result<T, E>` whereÁ üÛÓH
|
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|
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|
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|
|
H values yielded from the stream are `Ok(_)`. If `Err(_)` is encountered,Á üøÔ>
|
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|
; streaming is terminated and `collect()` returns the `Err`.Á »Õ
|
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|
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|
# NotesÁ ÓÕ
|
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let doubled: Vec<i32> =Á üÌØ#
|
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stream::iter(vec![1, 2, 3])Á ÜôØ
|
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|
.map(|x| x * 2)Á ´”Ù
|
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.collect()Á œ¯Ù
|
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.await;Á ÇÙ
|
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$ assert_eq!(vec![2, 4, 6], doubled);Á <ûÙ
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: // A stream containing only `Ok` values will be collectedÁ ü¯Ü(
|
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|
|
% let values: Result<Vec<i32>, &str> =Á üÜÜ/
|
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, stream::iter(vec![Ok(1), Ok(2), Ok(3)])Á ´�Ý
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|
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' assert_eq!(Ok(vec![1, 2, 3]), values);Á úÝ
|
|||
|
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ú ü‚ÞD
|
|||
|
|
A // A stream containing `Err` values will return the first error.Á üËÞD
|
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|
|
A let results = vec![Ok(1), Err("no"), Ok(2), Ok(3), Err("nein")];Á ”ß
|
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|
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ú üœß(
|
|||
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|
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|
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|
stream::iter(results)Á ´ëß
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|
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|
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|
8: üÆþT
|
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ü’â4
|
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|
1 Applies a per-item timeout to the passed stream.Á Ëâ
|
|||
|
|
ú üÓâH
|
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|
E `timeout()` takes a `Duration` that represents the maximum amount ofÁ ü ãF
|
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|
C time each element of the stream has to complete before timing out.Á ëã
|
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|
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ú üóãL
|
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|
I If the wrapped stream yields a value before the deadline is reached, theÁ üÄäM
|
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|
J value is returned. Otherwise, an error is returned. The caller may decideÁ ü–åL
|
|||
|
|
I to continue consuming the stream and will eventually get the next sourceÁ üçå/
|
|||
|
|
, stream value once it becomes available. SeeÁ ü›æJ
|
|||
|
|
G [`timeout_repeating`](StreamExt::timeout_repeating) for an alternativeÁ üêæ#
|
|||
|
|
where the timeouts will repeat.Á ’ç
|
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|
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|
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‹¢ ªç
|
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ú ü²çB
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? This function consumes the stream passed into it and returns aÁ Ôùç
|
|||
|
|
wrapped version of it.Á ˜è
|
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|
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ú ü èK
|
|||
|
|
H Polling the returned stream will continue to poll the inner stream evenÁ üðè"
|
|||
|
|
if one or more items time out.Á —é
|
|||
|
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|
|||
|
|
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|
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|
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G Suppose we have a stream `int_stream` that yields 3 numbers (1, 2, 3):Á ‰ê
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( # let int_stream = stream::iter(1..=3);Á õë
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|
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ú üýë@
|
|||
|
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= let int_stream = int_stream.timeout(Duration::from_secs(1));Á äÂì
|
|||
|
|
tokio::pin!(int_stream);Á ãì
|
|||
|
|
ú üëìC
|
|||
|
|
@ // When no items time out, we get the 3 elements in succession:Á ü³í9
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|
6 assert_eq!(int_stream.try_next().await, Ok(Some(1)));Á üñí9
|
|||
|
|
6 assert_eq!(int_stream.try_next().await, Ok(Some(2)));Á ü¯î9
|
|||
|
|
6 assert_eq!(int_stream.try_next().await, Ok(Some(3)));Á üíî6
|
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|
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3 assert_eq!(int_stream.try_next().await, Ok(None));Á ¨ï
|
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|
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ú ü°ïU
|
|||
|
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R // If the second item times out, we get an error and continue polling the stream:Á üŠðL
|
|||
|
|
I # let mut int_stream = stream::iter(vec![Ok(1), Err(()), Ok(2), Ok(3)]);Á üÛð9
|
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|
ò¹ ü™ñ2
|
|||
|
|
/ assert!(int_stream.try_next().await.is_err());Á üÐñ9
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D // If we want to stop consuming the source stream the first time anÁ üÛó?
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|||
|
|
< // element times out, we can use the `take_while` operator:Á üŸôH
|
|||
|
|
E # let int_stream = stream::iter(vec![Ok(1), Err(()), Ok(2), Ok(3)]);Á üìô>
|
|||
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|
; let mut int_stream = int_stream.take_while(Result::is_ok);Á ¯õ
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E Once a timeout error is received, no further events will be receivedÁ ü�÷F
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C unless the wrapped stream yields a value (timeouts do not repeat).Á è÷
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|
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ú <ð÷
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Ï¥ üü÷D
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A # #[tokio::main(flavor = "current_thread", start_paused = true)]Á ¼Åø
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9 use tokio_stream::{StreamExt, wrappers::IntervalStream};Á ä¢ù
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|
^ let interval_stream = IntervalStream::new(tokio::time::interval(Duration::from_millis(100)));Á ü©úL
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|
I let timeout_stream = interval_stream.timeout(Duration::from_millis(10));Á üúú
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|
tokio::pin!(timeout_stream);Á Ÿû
|
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J // Only one timeout will be received between values in the source stream.Á üùû5
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|
2 assert!(timeout_stream.try_next().await.is_ok());Á ü³üN
|
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|
|
K assert!(timeout_stream.try_next().await.is_err(), "expected one timeout");Á ü†ýR
|
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|
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H stream value once it becomes available. Unlike `timeout()`, if no valueÁ üïƒK
|
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H becomes available before the deadline is reached, additional errors areÁ ü¿„K
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H returned at the specified interval. See [`timeout`](StreamExt::timeout)Á ü�…8
|
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|
|
5 for an alternative where the timeouts do not repeat.Á Ì…
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ú \Ô…
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) until the wrapped stream yields a value.Á «–
|
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ú <³–
|
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] let interval_stream = IntervalStream::new(tokio::time::interval(Duration::from_millis(23)));Á üë˜l
|
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|
i let timeout_stream = interval_stream.timeout_repeating(tokio::time::interval(Duration::from_millis(9)));Á üÜ™
|
|||
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|
‰Æ �š
|
|||
|
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ú ü‰šN
|
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|
K // Multiple timeouts will be received between values in the source stream.Á üÜš5
|
|||
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|
™Ç ü–›N
|
|||
|
|
ÙÇ üé›S
|
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|
|
P assert!(timeout_stream.try_next().await.is_err(), "expected a second timeout");Á üÁœF
|
|||
|
|
C // Will eventually receive another value from the source stream...Á üŒ�M
|
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|
J assert!(timeout_stream.try_next().await.is_ok(), "expected non-timeout");Á <Þ�
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|
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üÔ¥V
|
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üîŸ;
|
|||
|
|
8 Slows down a stream by enforcing a delay between items.Á ®
|
|||
|
|
ú ü¶ R
|
|||
|
|
O The underlying timer behind this utility has a granularity of one millisecond.Á �¡
|
|||
|
|
ú l•¡
|
|||
|
|
|
|||
|
|
# ExampleÁ §¡
|
|||
|
|
ú ô¯¡
|
|||
|
|
Create a throttled stream.Á ”Ò¡
|
|||
|
|
```rust,no_runÁ äé¡
|
|||
|
|
Ö� üŠ¢
|
|||
|
|
use tokio_stream::StreamExt;Á ¯¢
|
|||
|
|
ú ´·¢
|
|||
|
|
# async fn dox() {Á üÒ¢V
|
|||
|
|
S let item_stream = futures::stream::repeat("one").throttle(Duration::from_secs(2));Á ì£
|
|||
|
|
tokio::pin!(item_stream);Á Ï£
|
|||
|
|
ú T×£
|
|||
|
|
loop {Á üæ£>
|
|||
|
|
; // The string will be produced at most every 2 secondsÁ ü©¤3
|
|||
|
|
0 println!("{:?}", item_stream.next().await);Á ,á¤
|
|||
|
|
±¥ <ë¤
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|||
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»�ÖÊ … … öˆ ‡Ž‰ ¼ ˆê… ¼ ‰¤‰ ¼ Šê? ¼ ²Dý&ž)J»� ¨ ¨ Ì€,¤¦
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ü‘¶r
|
|||
|
|
üݦ[
|
|||
|
|
X Batches the items in the given stream using a maximum duration and size for each batch.Á ½§
|
|||
|
|
ú üŧL
|
|||
|
|
I This stream returns the next batch of items in the following situations:Á ü–¨Z
|
|||
|
|
W 1. The inner stream has returned at least `max_size` many items since the last batch.Á üõ¨T
|
|||
|
|
Q 2. The time since the first item of a batch is greater than the given duration.Á üΩ)
|
|||
|
|
& 3. The end of the stream is reached.Á ü©
|
|||
|
|
ú ü„ªd
|
|||
|
|
a The length of the returned vector is never empty or greater than the maximum size. Empty batchesÁ üíª:
|
|||
|
|
7 will not be emitted if no items are received upstream.Á ¬«
|
|||
|
|
ú d´«
|
|||
|
|
# PanicsÁ Å«
|
|||
|
|
ú üÍ«.
|
|||
|
|
+ This function panics if `max_size` is zeroÁ €¬
|
|||
|
|
ú lˆ¬
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|||
|
|
Ùß š¬
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|||
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ú \¢¬
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|
|||
|
|
� üì¬2
|
|||
|
|
㢠ܣ
|
|||
|
|
use futures::FutureExt;Á Ã
|
|||
|
|
ú ”Ë
|
|||
|
|
·ž Üâ
|
|||
|
|
# async fn _unused() {}Á ü‚®D
|
|||
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```no_runÁ üÇ2㢠úú ”þ·ž ¬‘ñž ü§1 . let mut never = stream::pending::<i32>();Á Ùú üÝ# // This will never completeÁ Ü� never.next().await;Á �ú ¼¡ unreachable!();Á ,¹±¥ <¿Ï¥<Ô €Ô ¥ µ µ ×Ê Ü
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ºˆ $Á <Ÿ \�\�n�n�t½ TÁ ƒœ¤›4 E ¾ ¿ §Y4% ¾ À poll_fnÁ<> Ç€ ¾ ÁŽ$V še ¾ ÂŽ e ¾ –ñ j „¾ ¾ Ãÿñ, ¥‚ ¾ Åk<† Ì� ¾ Æ·$� œØ ¾ Çl Æœ µ¤1 Ÿ|K �l` kLs Z\IK79Ô«6 œ É § Ê É Ê ÍìšÕ °6 Íì Õ ³6 êÔËÍÏÐÑÔ×ÚÛÜÝÞßá CE ?A üÏ:3 üÌ6@ = An iterator visiting all key-value pairs in arbitrary order.Á ‘7 ú ü™7. + The iterator element type is `&'a (K, V)`.Á Ì7 ú tÔ7 Íç ç7 ú <ï7 Ï¥ üû7+ ( use tokio_stream::{StreamMap, pending};Á «8 ú ü³8# let mut map = StreamMap::new();Á Û8 ú üã8& # map.insert("a", pending::<i32>());Á üŽ9 map.insert("b", pending());Á ü²9 map.insert("c", pending());Á Ö9 ú üÞ9% " for (key, stream) in map.iter() {Á üˆ:, ) println!("({}, {:?})", key, stream);Á ,¹: ±¥ <Ã: Ï¥$Ö: ª ªêÔ šÕ Õ ª Ì È Û: È
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end_or_lenÁ™l Él˜ï™l ŒœjSž 8ÆÕ ÍìšÕ Õ 8 Ì š ùMÿ» Äê: ÿ»úM 8ÆÕ tó: ÷»É –¼' ¦¼ Ë ü¿?? ü¬;H E An iterator visiting all key-value pairs mutably in arbitrary order.Á ù; ú ü�<2 / The iterator element type is `&'a mut (K, V)`.Á ¸< ú tÀ< Íç Ó< ú <Û< Ï¥ üç<+ �¶ —= ú üŸ=# ж Ç= ú üÏ=& ‰· üú= ¹· üž> â· Â> ú üÊ>) & for (key, stream) in map.iter_mut() {Á üø>, Ƹ ,©? ±¥ <³? Ï¥DÆ? « «êÔšÕ Õ « Î È Ï? È
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ÍšÕ Õ$Ô? øÍÝ?! Í8 Ë Ë Í ÜlÜl IterMutÁ ßlµ ™l àl¼º™l ál˜ï™l Ú½íDþïl% 8ÆÕ ÍìšÕ Õ 8 Î ˜ ùMÝÁ äâ? ÝÁúM 8ÆÕ”ë? ÕÁÇ ôÁ' „Â Í ü”C ü¬@! Creates an empty `StreamMap`.Á Ò@ ú üÚ@J G The stream map is initially created with a capacity of `0`, so it willÁ ü©A1 . not allocate until it is first inserted into.Á ßA ú tçA Íç úA ú <‚B Ï¥ üŽB+ ( use tokio_stream::{StreamMap, Pending};Á ¾B ú üÆB= : let map: StreamMap<&str, Pending<()>> = StreamMap::new();Á <ˆC Ï¥ ›C êÔ È È
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ÏšÕ Õü�G8 üçC= : Creates an empty `StreamMap` with the specified capacity.Á ©D ú ü±DL I The stream map will be able to hold at least `capacity` elements withoutÁ ü‚EG D reallocating. If `capacity` is 0, the stream map will not allocate.Á ÎE ú tÖE Íç éE ú <ñE Ï¥ üýE+ »Ã F ú üµFI F let map: StreamMap<&str, Pending<()>> = StreamMap::with_capacity(10);Á <ƒG Ï¥l–G êÔ È È
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ÐšÕ ÕÆ6D¤G ü‡L. ü¦H= : Returns an iterator visiting all keys in arbitrary order.Á èH ú üðH) & The iterator element type is `&'a K`.Á žI ú t¦I Íç ¹I ú <ÁI Ï¥ üÍI+ �¶ ýI ú ü…J# ж J ú üµJ& ‰· üàJ ¹· ü„K â· ¨K ú Ü°K for key in map.keys() {Á äÐK println!("{}", key);Á ,ñK ±¥ <ûK Ï¥$ŽL ¬ ¬êÔ šÕ Õ ¬ Ò È “L È
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ÑšÕ Õ$”L ÀÎ�L Ñ8 Ì Ì Ñ ââ âZ åù æ±Å@ Iœóë ¶¥ÿ» ÓšÕ Õ ±¼ 8šÕ ÍìšÕ Õ 8 Ò © ùM�Ï œ¢L �ÏúM éÎL«L ùÎÒ ˜Ï! ¨Ï Ñ DÐL ÑÜà Ó õà Ó “á Ó Ó Ñ ÓšÕ Õ ÆÕ šÕ üÌP0 üçL7 4 An iterator visiting all values in arbitrary order.Á £M ú ü«M) & The iterator element type is `&'a V`.Á ÙM ú táM Íç ôM ú <üM Ï¥ üˆN+ �¶ ¸N ú üÀN# ж èN ú üðN& ‰· ü›O ¹· ü¿O â· ãO ú üëO for stream in map.values() {Á ü�P! println!("{:?}", stream);Á ,¶P ±¥ <ÀP Ï¥4ÓP êÔ šÕ Õ Õ È ÚP È
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ÔšÕ Õ$ÛP ÀÏäP Ô8 Í Í Ô ââ âZ åù æ±Å@ Iœóë ¶¥ÿ» ÖšÕ Õ äÎ 8 Õ ÍìšÕ Õ 8 Õ § ùM×Õ œéP ×ÕúM ¿ÕLòP ÏÕÐ îÕ! þÕ Ô D—Q ÔÜà Ö õà Ö “á Ö Ö Ô ÖšÕ Õ ²Ð Õ ü£U< ü®Q? < An iterator visiting all values mutably in arbitrary order.Á òQ ú üúQ- * The iterator element type is `&'a mut V`.Á ¬R ú t´R Íç ÇR ú <ÏR Ï¥ üÛR+ �¶ ‹S ú ü“S# ж »S ú üÃS& ‰· üîS ¹· ü’T â· ¶T ú ü¾T$ ! for stream in map.values_mut() {Á üçT! œÒ ,�U ±¥ <—U Ï¥TªU ® ®êÔšÕ Õ ® Ø È µU È
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¤ÛÉ$Ú á ¤Üà ¥ õà ¥ “á ¥ ¥ ¤ ¥ÛÉ„½ ü‡ ”�¤Ã ¬�ä ühP M A wrapper around [`tokio::sync::mpsc::Receiver`] that implements [`Stream`].Á ¹ú l½Ùß Ëú <ÏÏ¥ Ô׊� üò/ , use tokio_stream::wrappers::ReceiverStream;Á ü¢ Ðà Ãú üÇ/«£ ü÷N K # async fn main() -> Result<(), tokio::sync::mpsc::error::SendError<u8>> {Á üÆ$ ! let (tx, rx) = mpsc::channel(2);Á ¼ë tx.send(10).await?;Á ¼ƒ tx.send(20).await?;Á ü›* ' # // prevent the doc test from hangingÁ lÆ
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drop(tx);Á Ôú üØ- * let mut stream = ReceiverStream::new(rx);Á ü†. + assert_eq!(stream.next().await, Some(10));Á üµ. + assert_eq!(stream.next().await, Some(20));Á üä*—ê d� # Ok(())Á <œ¿¥ <¤Ï¥ ¬ú ü°G D [`tokio::sync::mpsc::Receiver`]: struct@tokio::sync::mpsc::ReceiverÁ üø# [`Stream`]: trait@crate::StreamÁ t¸ ¥ © © ×Ê ÇÛŸ yI¤‡ç¡n| ª ”Ð,Ð ¨ ¨ £ (¥ 7 ¥ ¬ ¬ ×Êl ¿cˆ ÇÛŸ Àc Ž� UW Ì Í Î ÌÛŸ Í c c ˆ ¢cµ
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ˆ þ±üà% üqY V A wrapper around [`tokio::sync::mpsc::UnboundedReceiver`] that implements [`Stream`].Á Ë ú lÏ Ùß Ý ú <á Ï¥ Ôé Š� ü„8 5 use tokio_stream::wrappers::UnboundedReceiverStream;Á ü½ Ðà Þ ú üâ/ «£ ü’N ¹² üá- * let (tx, rx) = mpsc::unbounded_channel();Á Œ� tx.send(10)?;Á Œ¡ tx.send(20)?;Á ü³* ÿ³ lÞ ²´ ì ú üð6 3 let mut stream = UnboundedReceiverStream::new(rx);Á ü§. Œµ üÖ. ĵ ü…* —ê d° ‰¶ <½ ¿¥ <Šϥ Í ú üÑY V [`tokio::sync::mpsc::UnboundedReceiver`]: struct@tokio::sync::mpsc::UnboundedReceiverÁ ü«# –· ¼ë ¥ ¯ ¯ ×Ê ƒ †¡ #†²´tè# ° ÜŒ ,Œ ' ® ® Ì¡(Ø 8 ¥ ² ² ×Êl ʹƒ †¡³ Àc ³ †ˆ MO Ï Ð Ñ Ï†¡ Ð c c ˆ ¢cµ
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Ç $ë Ä’Ý£Ìï üm= : A wrapper around [`Interval`] that implements [`Stream`].Á « ú l¯ Ùß ½ ú <Á Ï¥ üÉ3 0 use tokio::time::{Duration, Instant, interval};Á üý/ , use tokio_stream::wrappers::IntervalStream;Á ü Ðà Î ú üÒ/ «£ ¼‚ 㣠üš let start = Instant::now();Á üº7 4 let interval = interval(Duration::from_millis(10));Á üò3 0 let mut stream = IntervalStream::new(interval);Á œ¦ for _ in 0..3 {Á üº4 1 if let Some(instant) = stream.next().await {Á üïG D println!("elapsed: {:.1?}", instant.duration_since(start));Á L· Ї ,Á ±¥ <Ç ¿¥ <Ï Ï¥ × ú üÛ. + [`Interval`]: struct@tokio::time::IntervalÁ üŠ# –· 9tú µ¢ °Aâ¹ö^v Ê|� ,� ´ É É ø¢(· : µ¢Ì Àc Ì "$ Ø Ù Ú Øµ¢ Ù c c ˆ ¢cµ
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