どうしようJUnit5 - Speaker Deck

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@irof Ͳ͏͠Α͏+6OJU 5 ++6($$$'BMM DDD@G

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ηογϣϯ֓ཁ ϦϦʔεؒۙͷ+6OJUɻ +6OJUΛ࢖༻͍ͯ͠Δํ͸ଟ͍͔ͱ ࢥ͍·͕͢ɺ࣍όʔδϣϯͷ଍Ի͕ฉ ͖͑ͯ͜·ͨ͠ɻ ݱঢ়ҡ͔࣋Ҡߦ͔ͳͲɺʮͲ͏͠Α͏ʯ ͱࢥ͍ͬͯΔਓ͸ଟ͍Ͱ͠ΐ͏ɻࢲ΋ ͦͷҰਓͰ͢ɻ ͦΜͳΘ͚ͰɺͲ͏͠Α͏͔ߟ͑Δࡐ ྉΛूΊͯ࿩ͦ͏ͱࢥ͍·͢ɻ

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͍͘Β͔ͷ஫ҙ఺ +6OJU͸·ͩϦϦʔε͞Ε͍ͯ· ͤΜɻมΘΓ·͢ɻ ࣮຿Ͱ͸࢖͍ͬͯ·ͤΜɻ ͭ·Γໝ૝ηογϣϯͰ͢ɻ ଞͷ෦԰ʹߦ͜͏ɻ

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͜ͷεϥΠυͰ ࢖༻͍ͯ͠Δόʔδϣϯ +BWB@ +6OJU. (SBEMF +FOLJOT

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ϩΰ

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Ͳ͏͠Α͏ ͍·͙͢+6OJUΛ࢖͏ʁ +6OJU͔Β+6OJUʹ৐Γ׵͑Δʁ ৽͘͠+6OJU࢖͏ͷ͸ʁ +6OJU࢖͏࣌ʹࠔΔ͜ͱ͸ʁ

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౴͑ͳΜͯͳ͍ͷͰ +6OJU . Λઆ໌͠·͢ ϝϦοτσϝϦοτͱ͔ ͕࣌ؒ͋Ε͹͜ͷล΋࿩͠·͢ +6OJUͰށ࿭͍ͦ͏ͳͱ͜Ζ +6OJU͔Βͷ৐Γ׵͑ੋඇ

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+6OJUͷݱঢ়

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. .͔͍ͪ͏ͪ .ͦͷ͏ͪ ("2༧ఆ +%,ʹ͋ΘͤΔײ͔͡ͳʁ

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.͕Ͱ͢

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+6OJUͱͷޓ׵ੑ

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ͳ͍

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ޓ׵ੑʹ͍ͭͯ ผͷϑϨʔϜϫʔΫͰ͢ ผ෺ͳͷͰޓ׵ͳΜͯ͋ΔΘ͚ ΋ͳ͍Ͱ͢ ʮόʔδϣϯΞοϓͯͦ͠ͷ·· ࢖͑Δʯ͸͋Γ·ͤΜ

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ͳΜͰผͳͷʁ

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ผ෺ͳͷͰڞଘͰ͖Δ BSUJGBDU*EHSPVQ*E͕ҧ͏ ύοέʔδ΋ҧ͏ JUnit 5 PSHKVOJUKVQJUFS JUnit 4 PSHKVOJU JUnit 3 KVOJUGSBNFXPSL

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ڞଘʁ +6OJU +6OJU1MBUGPSN Ͱ+6OJUΛ ಈ࡞ͤ͞Δ +6OJU 3VOOFS Ͱ+6OJUͷςετ Λ࣮ߦ͢Δ +6OJUͷςετʹ+6OJUͷ3VMFΛ ద༻͢Δ ʜʜͳͲ͕ՄೳʹͳΔ

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ߏ੒ΛோΊͯΈΔ

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+6OJU +6OJU1MBUGPSN +6OJU+VQJUFS +6OJU7JOUBHF

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+6OJU1MBUGPSN KVOJUQMBUGPSN DPNNPOT KVOJUQMBUGPSN DPOTPMF KVOJUQMBUGPSN SVOOFS KVOJUQMBUGPSN HSBEMFQMVHJO KVOJUQMBUGPSN MBVODIFS KVOJUQMBUGPSN FOHJOF KVOJUQMBUGPSN TVSFpSFQSPWJEFS

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+6OJU+VQJUFS KVOJUKVQJUFSBQJ KVOJUKVQJUFS FOHJOF KVOJUQMBUGPSN DPNNPOT KVOJUQMBUGPSN FOHJOF KVOJUKVQJUFS NJHSBUJPOTVQQPSU

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+6OJU7JOUBHF KVOJUWJOUBHF FOHJOF KVOJUQMBUGPSN FOHJOF KVOJUKVOJU

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શମ KVOJUQMBUGPSN DPNNPOT KVOJUQMBUGPSNDPOTPMF KVOJUQMBUGPSNSVOOFS KVOJUQMBUGPSNHSBEMF QMVHJO KVOJUQMBUGPSNMBVODIFS KVOJUQMBUGPSNFOHJOF KVOJUQMBUGPSNTVSFpSF QSPWJEFS KVOJUWJOUBHFFOHJOF KVOJUKVQJUFSBQJ KVOJUKVQJUFSFOHJOF KVOJUKVOJU KVOJUKVQJUFSNJHSBUJPO TVQQPSU

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%FQFOEFODZ%JBHSBN .ͷ6TFS(VJEFͰ௥Ճ͞Εͨਤ

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࢖ͬͯΈΔ

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+6OJUˠ+6OJU KVOJUKVOJU PSHKVOJUKVQJUFSKVOJUKVQJUFSBQJ. PSHKVOJUKVQJUFSKVOJUKVQJUFSFOHJOF. FOHJOF͸࣮ߦ࣌ ͚ͩͰΑ͍

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ࢀߟϏϧυπʔϧͷઃఆ IUUQTHJUIVCDPNKVOJUUFBN KVOJUTBNQMFT

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ςετίʔυ

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ඞਢͷมߋ !5FTUͷύοέʔδ͕ҧ͏ PSHKVOJU5FTU PSHKVOJUKVQJUFSBQJ5FTU

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ςετίʔυ PSHKVOJUKVQJUFSBQJ5FTU ݟͨ໨͸ಉ͡Ͱ͢

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೚ҙͷมߋ Ϋϥε͸QVCMJDͰͳͯ͘Α͍ ϝιου͸QVCMJDͰͳͯ͘Α͍ ৽͍͠Ξαʔγϣϯ"1*

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ςετίʔυ QVCMJD͡Όͳͯ͘Α͍ QVCMJD͡Όͳͯ͘Α͍ PSHKVOJUKVQJUFSBQJ"TTFSUJPOT ݟͨ໨͸ಉ͡Ͱ͢

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୯७ͳΒύοέʔδมߋͰࡁΉ

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ϚΠάϨʔγϣϯʹ͍ͭͯ͸ 6TFS(VJEFʹ݁ߏॻ͔ΕͯΔ ͨͩ͠ɺສೳͳखॱͰ͸ͳ͍

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ςετͷ࣮ߦ

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*OUFMMJ+*%&" *OUFMMJ+*%&"ͰରԠ͞Εͨ

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.ʹͨ͠Β *OUFMMJ+*%&"͕.Λ࢖ͬͯΔ͔Βɻ KVOJUQMBUGPSNMBVODIFS.Λ࢖͑͹0,

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(SBEMF UFTU$MBTT UFTU KVOJU1MBUGPSN5FTU ௥Ճ͞ΕΔλεΫ ແޮԽ͞ΕΔλεΫ ੍ޚՄೳ KVOJUQMBUGPSNHSBEMFQMVHJOͷग़൪

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࣮ߦ݁Ռ͸͜Μͳײ͡ )5.-ͷSFQPSU͸ࠓͷͱ͜Ζग़·ͤΜ

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+FOLJOT (SBEMF +FOLJOTʹ+6OJU݁ՌͷऩूΛͤͨ݁͞Ռ

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+FOLJOT (SBEMF.BWFO͕ಈ͔͘Β໰୊ͳ͍ ݁Ռͷूܭ΋Ͱ͖Δ 9.-ͷߏ଄͸ͦͷ·· !%JTQMBZ/BNFʹ͸ະରԠ ଍͞Ε͚ͨͩͩ͠

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൪֎+6OJUͰಈ͖㽂 6TFS(VJEFࢀর

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+6OJUͰ+6OJUΛಈ͔͢ !3VO8JUI +6OJU1MBUGPSNDMBTT

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ཧ۶্΋࣮ࡍ΋ಈ͚͘Ͳ ʮڞଘՄೳʯͬͯݴͬͨ΍ͭɻ +6OJUͷ্Ͱ+6OJUΛಈ͔ͨ͠Γɺ +6OJUͷ্Ͱ+6OJUΛಈ͔ͨ͠ Γɺ΍Γ͗͢Δͱ͍͍ײ͡ʹࠞཚ Ͱ͖ͦ͏ɻ

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ػೳͷ঺հ

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Ұ௨Γͷ঺հ͸ͤͣɺ+6OJUͱͷ ൺֱΛத৺ʹ࿩͠·͢ ػೳશମ͸6TFS(VJEFʹ͓೚ͤ े෼ͳ৘ใ͕͋Δ͚Ͳɺ  ͦΜͳϘϦϡʔϜ͸ͳ͍Ͱ͢ɻ

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+6OJUͱͷ"1*ൺֱ

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"1*ൺֱͳͷͰ +6OJU+VQJUFSͷ࿩ KVOJUKVQJUFSBQJ +6OJU1MBUGPSN΍+6OJU7JOUBHFͷ ग़൪͸ͳ͍Ͱ͢

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Ξϊςʔγϣϯ Ξαʔγϣϯ ֦ுϞσϧ ߏ଄Խ ύϥϝʔλʔԽ Ξ ϊςʔ γϣϯ Ξαʔ γϣϯ ֦ுϞ σϧ ߏ଄Խ ύϥ ϝʔ λʔԽ

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Ξϊςʔγϣϯ Ξ ϊςʔ γϣϯ Ξαʔ γϣϯ ֦ுϞ σϧ ߏ଄Խ ύϥ ϝʔ λʔԽ

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͍͍ͩͨͦͷ·· JUnit 4 JUnit 5 !5FTU !5FTU !#FGPSF !#FGPSF&BDI !"GUFS !"GUFS&BDI !#FGPSF$MBTT !#FGPSF"MM !"GUFS$MBTT !"GUFS"MM !*HOPSF !%JTBCMFE

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ͳ͘ͳͬͨ JUnit 4 ͤͭΊ͍ !3VO8JUI ςετͷ࣮ߦͷ࢓ ํΛม͑Δ΍ͭ !3VMF !$MBTT3VMF ςετ࣮ߦ࣌ʹ͋ Ε͜Ε͢Δ΍ͭ !'JY.FUIPE0SEFS ςετ࣮ߦॱΛݻ ఆ͢Δ΍ͭ ࣮ߦॱࢦఆ͸.ͰԿ͔ೖΔ༧ఆ

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PSEFSJOHϥϕϧΛݟ͍ͯͩ͘͞

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৽͍͠ͷ JUnit 5 ͤͭΊ͍ !/FTUFE &ODMPTFEʹࣅͨ΋ͷ !5BH $BUFHPSZʹࣅͨ΋ͷ !%JTQMBZ/BNF έʔε໊Λࢦఆ͢Δ !5FTU'BDUPSZ ಈతςετͰ࢖͏ !&YUFOE8JUI ֦ுͰ࢖͏

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Ξαʔγϣϯ Ξ ϊςʔ γϣϯ Ξαʔ γϣϯ ֦ுϞ σϧ ߏ଄Խ ύϥ ϝʔ λʔԽ

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Ξαʔγϣϯ͸෼͚΍͍͢ ςετಈ ͔͢ࢠ ςετ ςετ͞ΕΔࢠ ؀ڥ Ξαʔγϣϯ͸͜͜

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஍ຯͳมߋ ഇࢭ BTTFSU5IBU ௥Ճ -BNCEBΛ࢖͏΋ͷ BTTFSU"MM BTTFSU5ISPXT BTTFSU5JNFPVU 1SFFNQUJWFMZ

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஍ຯͳมߋ ഇࢭ BTTFSU5IBU ௥Ճ -BNCEBΛ࢖͏΋ͷ BTTFSU"MM BTTFSU5ISPXT BTTFSU5JNFPVU 1SFFNQUJWFMZ Ҿ͖ଓ͖࢖͍͍ͨ৔߹͸ )BNDSFTUΛ࢖͍·͠ΐ͏

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஍ຯͳมߋ ഇࢭ BTTFSU5IBU ௥Ճ -BNCEBΛ࢖͏΋ͷ BTTFSU"MM BTTFSU5ISPXT BTTFSU5JNFPVU 1SFFNQUJWFMZ !5FTUͷ஋ʹ ॻ͍ͯͨ΍ͭ

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"TTFSU+͸ಡΜͰ͍ͩ͘͞ WPM ൃച

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֦ுϞσϧ Ξ ϊςʔ γϣϯ Ξαʔ γϣϯ ֦ுϞ σϧ ߏ଄Խ ύϥ ϝʔ λʔԽ

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֦ுํ๏͕ҰຊԽ 3VOOFS &YUFOTJPO 3VMF

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&YUFOTJPOͷ࢖͍ํ &YUFOTJPOͷ࣮૷ΫϥεΛ࡞ͬͯʔ !&YUFOE8JUIͰࢦఆ͢Δ

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&YUFOTJPOࡶײ ֦ுϙΠϯτʹԠͨ͡ΠϯλϑΣʔ εΛ࣮૷ͯ͠࡞Δ 3VMFΛγϯϓϧʹͨ͠΋ͷ ख৮Γ͸ྑ͍ 3VMFͷΑ͏ͳສೳײ͸ͳ͍

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࣮૷ΛΈͯΈΑ͏ .PDLJUP&YUFOTJPO KVOJUUFBNʹΑΔ 4QSJOH&YUFOTJPO 4QSJOH'SBNFXPSLʹΑΔ TQSJOHUFTUʹೖΓͦ͏

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͋·Γ৮Εͯͳ͍ͷͰ ৄ͍͠࿩͸ͦͷ͏ͪɻ

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ߏ଄Խ Ξ ϊςʔ γϣϯ Ξαʔ γϣϯ ֦ுϞ σϧ ߏ଄Խ ύϥ ϝʔ λʔԽ

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ςετίʔυͷߏ଄Խ !&ODMPTFE !/FTUFE

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&ODMPTFE

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/FTUFE

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&ODMPTFEWT/FTUFE /FTUFE͕֨ஈʹΑ͍ TUBUJDෆཁʢඇTUBUJDʣ !#FGPSF&BDIͱ͔ॻ͚Δ !5FTUͱฒ΂ͯॻ͚Δ

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ύϥϝʔλʔԽ Ξ ϊςʔ γϣϯ Ξαʔ γϣϯ ֦ுϞ σϧ ߏ଄Խ ύϥ ϝʔ λʔԽ

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ύϥϝʔλʔԽ 1BSBNFUFSJ[FE %ZOBNJD5FTU 5IFPSZ

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%ZOBNJD5FTU

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%ZOBNJD5FTU !5FTU'BDUPSZΛ͚ͭΔ %ZOBNJD5FTUͷΠϯελϯεΛؚΉ 4USFBN΍$PMMFDUJPOͳͲΛฦ͢ ແݶετϦʔϜ΋ॲཧͰ͖Δ

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+6OJUʹͳ͍ػೳ ςετϨϙʔτ༻ͷ໊લ͕͚ͭΒ ΕΔ!%JTQMBZ/BNF ϝιουίϯετϥΫλ͕Ҿ਺Λ ड͚औΕΔ γφϦΦςετ޲͚ͷ֦ுʢະʣ

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ϝϦοτσϝϦοτ

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ϝϦοτ ίʔυ͕୹͘ͳΔ ֦ு೉౓͕Լ͕Δ ʢ৽ػೳʣ σϝϦοτ طଘͷ3VOOFS΍3VMF͕࢖͑ͳ͍ *%&ͷରԠ

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ࢀߟ3VMFΛಈ͔͢&YUFOTJPO

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3VMFΛಈ͔͢&YUFOTJPO ಛఆͷ3VMFʢ͓Αͼ֦ுʣݶఆ &YUFSOBM3FTPVSDF 7FSJGJFS &YQFDUFE&YDFQUJPO ͱ͸ݴ͑ڧྗ ͦͷؾʹͳΕ͹ଞ΋Մೳ͔΋

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ϝϦοτ༏੎ ଟ͘ͷσϝϦοτ͸ϦϦʔε͞Ε Ε͹ղܾ͞ΕΔ طଘͷ֦ுࢿ࢈͕͋ΔͳΒແཧʹ ৐Γ׵͑ͳͯ͘Α͍ ֦ு೉౓͕Լ͕Δͷ͸େ͖͍

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+6OJUͰށ࿭͍ͦ͏ ͳͱ͜Ζ

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ಈ͔ͳ͍ܥ !5FTUॻ͍ͯΔͷʹಈ͔ͳ͍ +6OJUͷΛ࢖ͬͯΔ͔΋ʁ !/FTUFE͕ಈ͔ͳ͍ TUBUJDʹͪ͠ΌͬͨΒμϝɻ

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ݟ͔ͭΒͳ͍ܥ !5FTU FYQFDUFE ͕ͳ͍ ৽͍͠ΞαʔγϣϯͰɻ !5FTU UJNFPVU ͕ͳ͍ ৽͍͠ΞαʔγϣϯͰɻ BTTFSU5IBU͕ߦํෆ໌ IBNDSFTUೖΕΕ͹͍͍Αɻ

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؀ڥܥ ϏϧυπʔϧपΓͰӠʑ ϦϦʔε͞ΕΕ͹͜ͳΕΔ͔ͱɻ *%&पΓͰӠʑ ϦϦʔε͞ΕΕ͹͜ͳΕΔ͔ͱɻ

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௒ॏཁ ݴͬͯͨॻ͍ͯͨͷͱ ڍಈ͕ҧ͏ ৘ใ͸όʔδϣϯΛ֬ ೝ͠·͠ΐ͏ɻ

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ࡶײ

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+6OJU͸ lୈࡾͷγεςϜzͬΆ͍

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ݱࡏ࡞͍ͬͯΔγεςϜͷςετ Λ+6OJUͰߦ͏ͷ͸ͳ͍ɻ ͢Ͱʹ+6OJUҎલͰ࡞͍ͬͯΔς ετΛஔ͖׵͑Δඞཁ͸ͳ͍ɻ ϦϦʔεޙʹ৽͘͠࡞ΔͳΒ+6OJU ͰΑͦ͞͏ɻ +%,ରԠ΋ͯ͠Δ͠ɻ

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ϑϨʔϜϫʔΫ΍ϥΠϒϥϦͷબ ఆʹؔΘΔػձ͸ଟ͘ͳ͍ɻ ܾ·ͬͨ΋ͷ͕͋ͬͯɺݕূ͞ Εͨ΋ͷҎ֎͸࢖͑ͳ͍ͱ͜Ζ ͸݁ߏଟ͍ɻ ςετ༻ͷϥΠϒϥϦ౳͸·ͩνϟ Ϩϯδ͠΍͍͢ྖҬɻ खΛग़͠΍͍͢΋ͷʹͳͬͯΔ ͱ΋ࢥ͍·͢ɻ