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UFO演算子について

Avatar for Hirofumi Wakasugi Hirofumi Wakasugi
September 11, 2016
Programming
470
0

 UFO演算子について

RubyKaigi 2016 After Party (2016-09-10)

Avatar for Hirofumi Wakasugi

Hirofumi Wakasugi

September 11, 2016

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Transcript

  1. 6'0 ԋࢉࢠ ʹ͍ͭͯ (What's the Story) Spaceship Operator? Hirofumi Wakasugi

    (@5t111111)

  2. ϓϩάϥϚʔ Hirofumi Wakasugi (@5t111111)

  3. 4QBDFTIJQ0QFSBUPS  DMBTT4J[F.BUUFST JODMVEF$PNQBSBCMF EFGJOJUJBMJ[F TUS  !TUSTUS FOE 

    EFG PUIFS  TUSTJ[FPUIFSTUSTJ[F FOE FOE w #BTJDPQFSBUPSGPSDPNQBSJOHUIFSFDFJWFSBHBJOTUBOPUIFSPCKFDU w "MTPLOPXOBTl6'0PQFSBUPSz MFBTUJO+BQBO  w $MBTTFTNJYJOT$PNQBSBCMFNVTUJNQMFNFOU

  4. *NQMFNFOUBUJPOPG w1PTJUJWFOVNCFSJGTFMGJTHSFBUFSUIBOPUIFS w;FSPJGTFMGJTFRVBMUPPUIFS w/FHBUJWFOVNCFSJGTFMGJTMFTTUIBOPUIFS DMBTT'PP ǘ EFG PUIFS  SFUVSOJGTJ[FPUIFSTJ[F

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  5. w :PVDBOXSJUFMJLFUIJTVTJOHJUTJNQMFNFOUBUJPO w -PPLTQSFUUZDPOWFOJFOU EPFTO`UJU "UJQGPSVTJOH DBTF GPPCBS  XIFO

    QVUTGPPJTFRVBMUPCBS XIFO QVUTGPPJTHSFBUFSUIBOCBS FMTF QVUTGPPJTMFTTUIBOCBS FOE

  6. w :PVDBOXSJUFMJLFUIJTVTJOHJUTJNQMFNFOUBUJPO w -PPLTQSFUUZDPOWFOJFOU EPFTO`UJU "UJQGPSVTJOH DBTF GPPCBS  XIFO

    QVUTGPPJTFRVBMUPCBS XIFO QVUTGPPJTHSFBUFSUIBOCBS FMTF QVUTGPPJTMFTTUIBOCBS FOE ʁʁ
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  7. 4P*BMXBZTEPUIFGPMMPXJOHTUFQTXIFO* XBOUUPVTFDPNQBSJTPOPQFSBUPSTXJUINZ DMBTTFT  *ODMVEFUIFNPEVMFJOBDMBTT  4UBSUXSJUJOHAEFG PUIFS FOEA 

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  8. 4P*UIJOL*NQMFNFOUBUJPOPG FYDFQUJPOBMMZMBDLTEFTDSJQUJWFQPXFS JO3VCZXPSME almost seems like magic numbers

  9. *USFNJOETNFPGTPNFUIJOHMJLF JOUDPNQBSF@JOU DPOTUWPJE B DPOTUWPJE C  \ SFUVSO JOU

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  10. w *UXPVMECFFBTJFSUPLOPXUIFDPEFT`JOUFOTJPO *BNTVSFZPVDBOVTFJGʜFMTJGʜUIPVHI  *XJTI*DPVMEXSJUFMJLF DBTFGPPCBS XIFO&2 QVUTGPPJTFRVBMUPCBS XIFO(5 QVUTGPPJTHSFBUFSUIBOCBS

    FMTF QVUTGPPJTMFTTUIBOCBS FOE

  11. )BTLFMM DMBTT&RB0SEBXIFSF DPNQBSFBB0SEFSJOH EBUB0SEFSJOH-5]&2](5 ADPNQBSFA -5 0SE 0SEFSJOH DPNQBSFSFUVSOT0SEFSJOH 3VTU

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  13. w *UEPFTOPUXPSLCFDBVTFPGUIFJSUZQFT w .BZCFJUIBTTPNFPWFSIFBE 8IBUJGUIFTFDPOTUBOUTBSF BWBJMBCMFJOHMPCBMOBNFTQBDFʜ EFG PUIFS  JGTJ[FPUIFSTJ[F

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