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4DBMBֆจࣈϥΠϒϥϦʹ .BDSPͳͲΛಋೖͯ͠Έͨ !UPEPLS ָ͍͠ʂ

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୭ͩ

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ా ॴ ॣ ༎ ! U P E P L S w ݕ ࡧ Τ ϯ δ ϯ ࣄ ۀ ຊ ෦ Ϋ ϩ ʔ ϥ ʔ ։ ൃ w ࢓ ࣄ Ͱ ͸ 4 D B M B + B W B 4 D S J Q U 1 Z U I P O w ϓ ϥ Πϕ ʔ τ Ͱ ͸ $ M P K V S F $ M P K V S F 4 D S J Q U w ࣾ ಺ Ͱ ͸ ʮ จ ࣈ ί ʔ υ ͷ ਓ ʯ ͱ ͔ 
 ʮ ΤϞ δ χ Ξ ʯ ͱ ݺ ͹ Εͯ ͍ · ͢

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ా ॴ ॣ ༎ ! U P E P L S w ݕ ࡧ Τ ϯ δ ϯ ࣄ ۀ ຊ ෦ Ϋ ϩ ʔ ϥ ʔ ։ ൃ w ࢓ ࣄ Ͱ ͸ 4 D B M B + B W B 4 D S J Q U 1 Z U I P O w ϓ ϥ Πϕ ʔ τ Ͱ ͸ $ M P K V S F $ M P K V S F 4 D S J Q U w ࣾ ಺ Ͱ ͸ ʮ จ ࣈ ί ʔ υ ͷ ਓ ʯ ͱ ͔ 
 ʮ ΤϞ δ χ Ξ ʯ ͱ ݺ ͹ Εͯ ͍ · ͢

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ా ॴ ॣ ༎ ! U P E P L S w ݕ ࡧ Τ ϯ δ ϯ ࣄ ۀ ຊ ෦ Ϋ ϩ ʔ ϥ ʔ ։ ൃ w ࢓ ࣄ Ͱ ͸ 4 D B M B + B W B 4 D S J Q U 1 Z U I P O w ϓ ϥ Πϕ ʔ τ Ͱ ͸ $ M P K V S F $ M P K V S F 4 D S J Q U w ࣾ ಺ Ͱ ͸ ʮ จ ࣈ ί ʔ υ ͷ ਓ ʯ ͱ ͔ 
 ʮ ΤϞ δ χ Ξ ʯ ͱ ݺ ͹ Εͯ ͍ · ͢

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࠷ۙ࡞ͬͨ΋ͷ w 6OJDPEFͷֆจࣈ਺ ਐ਺Ͱ63-Λ୹ॖ w 1MBZ 4DBMB "844 &MBTUJD#FBOTUBML IUUQFNPKJVSMTIPSUFOFSDPN

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࠷ۙ࡞ͬͨ΋ͷ w 6OJDPEFͷֆจࣈ਺ ਐ਺Ͱ63-Λ୹ॖ w 1MBZ 4DBMB "844 &MBTUJD#FBOTUBML IUUQFNPKJVSMTIPSUFOFSDPN

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க໋తʜ

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க໋తʜ w 5XFUUFS
 
 
 
 
 
 
 


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க໋తʜ w 5XFUUFS
 
 
 
 
 
 
 


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க໋తʜ w 5XFUUFS
 
 
 
 w 4MBDL
 
 
 


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க໋తʜ w 5XFUUFS
 
 
 
 w 4MBDL
 
 
 


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க໋తʜ w 5XFUUFS
 
 
 
 w 4MBDL
 
 
 
 ˠϦϯΫʹͳͬͯ͘Εͳ͍

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ຊ୊

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ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ

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ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO

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ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO

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ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP

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ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP ʹ͍ͭͯɺ
 ֆจࣈϥΠϒϥϦʮ&NPKJQPMBUJPOʯΛ୊ࡐʹɺ
 ػೳͷར༻ྫΛ঺հ͠·͢ɻ

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ࠓ೔͸4DBMBͷಛ௃తͳػೳͰ͋Δɺ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP ʹ͍ͭͯɺ
 ֆจࣈϥΠϒϥϦʮ&NPKJQPMBUJPOʯΛ୊ࡐʹɺ
 ػೳͷར༻ྫΛ঺հ͠·͢ɻ ϥΠϒϥϦ࡞੒ͳͲͷࢀߟʹͳΕ͹͏Ε͍͠Ͱ͢ɻ

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͓࿩͢͠Δ͜ͱ w &NPKJQPMBUJPOͷ঺հ w ࣮૷ͷมભʹ͍ͭͯ w *NQMJDJU$POWFSTJPO w 4USJOH*OUFSQPMBUJPO w .BDSP w ϚΫϩಋೖલޙͷϕϯνϚʔΫൺֱ

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͓࿩͠͠ͳ͍͜ͱ w 4DBMBͷந৅ߏจ໦ʹ͍ͭͯͷৄࡉ w EFGϚΫϩҎ֎ͷ.BDSPͷৄࡉ w ϝλϓϩάϥϛϯά༻ඪ४ϥΠϒϥϦTDBMBNFUB

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ΑΖ͓͘͠Ͷ͕͍͠·͢

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&NPKJQPMBUJPOʁ w 4DBMB͔Β6OJDPEFֆจࣈΛ؆୯ʹѻ͏ϥΠϒϥϦ w FNPKJKBWBͷϥούʔ
 IUUQTHJUIVCDPNWEVSNPOUFNPKJKBWB

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Ϟνϕʔγϣϯ w จࣈྻʹֆจࣈΛؾܰʹ࢖͍͍ͨ w ਐϦςϥϧͰॻ͘ͷ͸ඇৗʹͭΒ͍ w େ఍ͷֆจࣈͷίʔυϙΠϯτ͸6'Ҏ্
 ˠαϩήʔτϖΞ

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Ϟνϕʔγϣϯ w จࣈྻʹֆจࣈΛؾܰʹ࢖͍͍ͨ w ਐϦςϥϧͰॻ͘ͷ͸ඇৗʹͭΒ͍ w େ఍ͷֆจࣈͷίʔυϙΠϯτ͸6'Ҏ্
 ˠαϩήʔτϖΞ

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Ϟνϕʔγϣϯ w จࣈྻʹֆจࣈΛؾܰʹ࢖͍͍ͨ w ਐϦςϥϧͰॻ͘ͷ͸ඇৗʹͭΒ͍ w େ఍ͷֆจࣈͷίʔυϙΠϯτ͸6'Ҏ্
 ˠαϩήʔτϖΞ

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Ϟνϕʔγϣϯ w จࣈྻʹֆจࣈΛؾܰʹ࢖͍͍ͨ w ਐϦςϥϧͰॻ͘ͷ͸ඇৗʹͭΒ͍ w େ఍ͷֆจࣈͷίʔυϙΠϯτ͸6'Ҏ্
 ˠαϩήʔτϖΞ

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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Ϟνϕʔγϣϯ w .BDͷֆจࣈΩʔϘʔυ͸࢖͍উख͕ྑ͍ w $NE$USM4QBDF w ͕͔ͩ͠͠ʜ w 6OJDPEFͷΞοϓσʔτʹ௥͍͍͍ͭͯͳ͍ w ͳͷͰɹɹͳͲ͕࢖͑ͳ͍ w ϓϥΠϕʔτͷϚγϯ͕.BD͡Όͳ͍

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w ֆจࣈ͕؆୯ʹೖྗͰ͖ΔΑ͏ʹ

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Ϟνϕʔγϣϯ (JUIVCϥΠΫʹKPZͳͲͱॻ͚ΔΑ͏ʹ͍ͨ͠
 ˠFNPKJKBWBͷར༻ String str = ":grinning:awesome :wink:emojis!"; String result = EmojiParser.parseToUnicode(str); System.out.println(result); // "awesome emojis!" ͜ΕΛΑΓ4DBMBΒ͍͠ํ๏Ͱʂ

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ݱόʔδϣϯ·ͰͷಓͷΓ w W*NQMJDJU$POWFSTJPO w W4USJOH*OUFSQPMBUJPO w W.BDSP

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W 
 *NQMJDJU$POWFSTJPO

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*NQMJDJU$POWFSTJPO֓ཁ ҉໧తʹܕม׵Λߦ͑ΔΑ͏ʹ͢Δػೳ ˠ%&.0

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*NQMJDJU$POWFSTJPO֓ཁ &OSJDI.Z-JCSBSZύλʔϯͰ
 طଘΫϥεʹϝιουΛ௥Ճ͢ΔʢΑ͏ʹݟ͔͚ͤΔʣ // Implicit ClassʹΑΔEnrich My Libraryύλʔϯ implicit class RichString(s: String) { def withSmile = s + ":)" } // new RichString("hello").withSmile "hello".withSmile // "hello:)" ˠ%&.0

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*NQMJDJU$POWFSTJPO࣮૷ ͜ΕΛ&NPKJQPMBUJPOʹԠ༻͢Δ object Emojipolation { implicit class EmojizableString(s: String) { def toEmoji: String = EmojiParser.parseToUnicode(s) } } // ར༻ଆ import io.github.todokr.Emojipolation._ "Hello! :joy:".toEmoji // Hello!

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*NQMJDJU$POWFSTJPOར༻ײ w 4USJOHΦϒδΣΫτʹϝιουΛ௥Ճ͢Δ͜ͱʹΑΓ
 ؆ܿʹֆจࣈม׵Λ࣮ݱ w ΋ͬͱ؆ܿͳํ๏͕͋ΔΑ͏ͳʜʁ

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*NQMJDJU$POWFSTJPOར༻ײ w 4USJOHΦϒδΣΫτʹϝιουΛ௥Ճ͢Δ͜ͱʹΑΓ
 ؆ܿʹֆจࣈม׵Λ࣮ݱ w ΋ͬͱ؆ܿͳํ๏͕͋ΔΑ͏ͳʜʁ IUUQTDBMJLFKECDPSHEPDVNFOUBUJPOTRMJOUFSQPMBUJPOIUNM

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W 
 4USJOH*OUFSQPMBUJPO

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4USJOH*OUFSQPMBUJPO֓ཁ w Ճ޻จࣈྻϦςϥϧ QSPDFTTFETUSJOHMJUFSBM ಺ʹ
 ม਺ΛຒΊࠐΉػೳ w ίϯύΠϥ͸͜ͷϦςϥϧʹରͯ͠ԿΒ͔ͷ௥ՃॲཧΛ࣮ߦ͢Δ

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4USJOH*OUFSQPMBUJPO֓ཁ w Tิؒࢠม਺Λల։
 
 
 
 w Gิؒࢠ'PSNBUUFSͰ੔ܗ val name = "todokr" s"Hello, $name" // "Hello, todokr" val Pi: Double = 3.14159265359 f"Pi is $Pi%1.2f" // "Pi is 3.14"

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4USJOH*OUFSQPMBUJPO֓ཁ w 4USJOH*OUFSQPMBUJPOͷਖ਼ମ͸ͨͩͷϝιουݺͼग़͠

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4USJOH*OUFSQPMBUJPO֓ཁ ίϯύΠϥ͕Ճ޻จࣈϦςϥϧΛݟ͚ͭΔ 4USJOH$POUFYUΠϯελϯεͷϝιουݺͼग़͠ʹม׵
 
 ಠࣗͷ4USJOH*OUFSQPMBUJPOΛఆٛ͢Δʹ͸ 
 ˠJNQMJDJUΫϥεΛ࡞Γɺ4USJOH$POUFYUΫϥεʹಠࣗͷϝιουΛ௥Ճ͢Δ hoge"some text" (StringContextͷΠϯελϯε).hoge(…)

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4USJOH*OUFSQPMBUJPO࣮૷ ࣮૷ଆ object Emojipolation { implicit class EmojiImpl(val sc: StringContext) extends AnyVal { def emoji(args: Any*): String = { // Ճ޻จࣈϦςϥϧͷจࣈྻ෦෼͸
 // StringContextͷparts:Seq[String]ͱͯ͠ఏڙ͞ΕΔ // ࠓճ͸ศٓతʹઌ಄͚ͩΛѻ͏ val rawString = sc.parts.head // "Hello! :joy:" etc EmojiParser.parseToUnicode(rawString) } } } import io.github.todokr.Emojipolation._ emoji"Hello! :joy:" // Hello! ར༻ଆ

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4USJOH*OUFSQPMBUJPO஫ҙ఺ w ࣮ߦ࣌ͷΠϯελϯεԽΛආ͚ΔͨΊɺ"OZ7BMΛܧঝ͢Δ w ৄࡉ͸IUUQEPDTTDBMBMBOHPSHKBPWFSWJFXTDPSFWBMVFDMBTTFTIUNMΛࢀর implicit class XXX(val sc: StringContext) extends AnyVal { def someMethod(args: Any*): String = ??? }

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4USJOH*OUFSQPMBUJPOར༻ײ w ͞Βʹ؆ܿʹɺ4DBMBΒ͘͠ֆจࣈม׵Λ࣮ݱ w ຖճม׵ϝιου͕ݺͼग़͞ΕΔͷ͸ scala> new EmojipolationTest().listEmojis converted! converted! converted! converted! converted! ...

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4USJOH*OUFSQPMBUJPOར༻ײ w ͞Βʹ؆ܿʹɺ4DBMBΒ͘͠ֆจࣈม׵Λ࣮ݱ w ຖճม׵ϝιου͕ݺͼग़͞ΕΔͷ͸ w ม׵͸ίϯύΠϧ࣌ʹߦ͍ɺ࣮ߦ࣌ͷΦʔόʔϔουΛͳ͍ͨ͘͠ scala> new EmojipolationTest().listEmojis converted! converted! converted! converted! converted! ...

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W 
 .BDSP

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.BDSP֓ཁ w ந৅ߏจ໦Λ૊Έସ͑ΔͨΊͷ࢓૊Έ w ந৅ߏจ໦ "45 ίʔυͷҙຯΛද͢໦ߏ଄ (pprint (macroexpand '(when (= color "blue") (println "Color is blue") (println "Not blue...")))) (if (= color "blue") (do (println "Color is blue") (println "Not blue..."))) ࢀߟDMPKVSFͷXIFOϚΫϩΛల։

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.BDSP֓ཁ w 4DBMB͸ίϯύΠϧ࣌ʹϚΫϩΛల։͢Δ͜ͱ͕Ͱ͖Δ
 ˠίϯύΠϧ࣌ʹ೚ҙͷॲཧ͕࣮ߦͰ͖Δ w 2VJMM%#ΞΫηεϥΠϒϥϦ w ίϯύΠϧ࣌ʹ42-ੜ੒ɺόϦσʔγϣϯ w 4DBMBGNUίʔυϑΥʔϚοτϥΠϒϥϦ w ίϯύΠϧ࣌ʹίʔυͷϑΥʔϚοςΟϯά

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.BDSP֓ཁ"45ΛݟͯΈΔ // ϦϑϨΫγϣϯAPIͷΠϯϙʔτ import scala.reflect.runtime.universe._ // qิؒࢠͰߏจ໦Λੜ੒ val tree = q""" protected val x = 1 private val y = 3 x + y """ // ϦϑϨΫγϣϯAPIͷshowRawͰՃ޻લͷߏจ໦Λग़ྗ showRaw(tree)

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.BDSP֓ཁ"45ΛݟͯΈΔ ਤʹ͢Δͱ͜͏ #MPDL "QQMZ -JTU 7BM%FG 7BM%FG .PEJpFST .PEJpFST 5FSN/BNF 5FSN/BNF -JUFSBM -JUFSBM $POTUBOU $POTUBOU 4FMFDU *EFOU -JTU 5FSN/BNF *EFOU 5FSN/BNF 5FSN/BNF Y 1305&$5&% 13*7"5& Z Y QMVT Z

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.BDSP֓ཁ"45ͷ૸ࠪ ΍Γ͍ͨ͜ͱ $POTUBOU IFMMPKPZ $POTUBOU಺ͷจࣈྻΛՃ޻͠ɺ
 ߏจ໦ͱͯ͠໭͢ $POTUBOU IFMMP ˠͲ͏΍ͬͯจࣈྻʹΞΫηε͢Δʁ

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.BDSP֓ཁ"45ͷ૸ࠪ w ύλʔϯϚονϯάΛ༻͍ͨ૸ࠪ w ؆୯ w యܕతͳͷ͸୯ҰͷϊʔυΞΫηε͢Δ৔߹ w 5SBWFSTFSͷαϒΫϥεΛ༻͍ͨ૸ࠪ w ߏจ໦શମΛ૸ࠪ͢Δ৔߹ Apply( // ࠓճͷՃ޻จࣈϦςϥϧʹϚον _, List( Apply( _, List( Literal(Constant(s: String)) ) ) ) )

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.BDSP࣮૷ object Emojipolation { // String Interpolationͷड෇෦ implicit class EmojipolationImpl(val sc: StringContext) extends AnyVal { def emoji(_: Any*): String = macro impl // ࣮૷͸ϚΫϩ } // ϚΫϩͷ࣮૷෦ def impl(c: blackbox.Context)(args: c.Expr[Any]*): c.Expr[String] = { import c.universe._ c.prefix.tree match { // String InterpolationͰड͚ͱͬͨStringʹϚον case Apply(_,List(Apply(_,List(Literal(Constant(s: String)))))) => // StringΛՃ޻͢Δߏจ໦ͱͯ͠ฦ͢ c.Expr[String](q"${EmojiParser.parseToUnicode(s)}") case _ => c.abort(c.enclosingPosition, "Oops!") } } }

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.BDSPϕϯνϚʔΫ ֆจࣈϦςϥϧΛݸѻ͏ॲཧ
 KNISVOJXJGU

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.BDSPϕϯνϚʔΫ Non Macro [info] Benchmark Mode Cnt Score Error Units
 [info] Main.listEmojis thrpt 30 3.454 ± 0.303 ops/s ֆจࣈϦςϥϧΛݸѻ͏ॲཧ
 KNISVOJXJGU

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.BDSPϕϯνϚʔΫ Non Macro [info] Benchmark Mode Cnt Score Error Units
 [info] Main.listEmojis thrpt 30 3.454 ± 0.303 ops/s Macro [info] Benchmark Mode Cnt Score Error Units
 [info] Main.listEmojis thrpt 30 337491.727 ± 3268.895 ops/s ֆจࣈϦςϥϧΛݸѻ͏ॲཧ
 KNISVOJXJGU

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.BDSPϕϯνϚʔΫ Non Macro [info] Benchmark Mode Cnt Score Error Units
 [info] Main.listEmojis thrpt 30 3.454 ± 0.303 ops/s Macro [info] Benchmark Mode Cnt Score Error Units
 [info] Main.listEmojis thrpt 30 337491.727 ± 3268.895 ops/s ˠεϧʔϓοτ͕໿ ഒʹ ֆจࣈϦςϥϧΛݸѻ͏ॲཧ
 KNISVOJXJGU

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.BDSP஫ҙ఺ IUUQLNJ[VIBUFOBCMPHDPNFOUSZ

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