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はじめてのRuby 第3章 / Ruby Practice 03
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muttan
October 25, 2016
Programming
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はじめてのRuby 第3章 / Ruby Practice 03
muttan
October 25, 2016
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Transcript
ͨͷ͍͠3VCZୈষ
ͨͷ͍͠3VCZୈষ ίϚϯυΛ࡞Ζ͏
ίϚϯυϥΠϯ ͔Βͷσʔλೖྗ
ίϚϯυϥΠϯ͔Βͷσʔλೖྗ w ϓϩάϥϜͰग़ྗͰͳ͘ೖྗΛѻ͓͏ w ·ͣ͡ΊʹɺίϚϯυϥΠϯҾ"3(7Λͬ ͯΈΔ w $ͷDIBS BSHW<>ͱಉ͡Α͏ʹ࣮ߦʢୠ͠ఴࣈ͕ গ͠ҟͳΔͨΊҙʣ
ίϚϯυϥΠϯ͔Βͷσʔλೖྗ w ࣮ߦ࣌ʹจࣈྻΛ༩͑Δͱɺඪ४ग़ྗʹදࣔ͞ ΕΔ w ίϚϯυϥΠϯҾɺۭന۠ΓͰೖྗ͢Δ ྫ͑ҎԼͷΑ͏ʹೖྗͨ͠߹ lBBBz͕"3(7<>ʹͳΔͷͰҙ 1QSJOU@BSHWSC࣮ߦ
SVCZQSJOU@BSHWSClBBBzlCCCzlDDDz
ίϚϯυϥΠϯ͔Βͷσʔλೖྗ w ίϚϯυϥΠϯҾͰܭࢉΛߦ͍͍ͨ FY ߹ɺจࣈྻˠࣈʹม͢Δඞཁ͕͋Δ w มɺ0CKUP@JͰߦ͏ 1BSH@BSJUISC࣮ߦ
ϑΝΠϧ͔Βͷ ಡΈࠐΈ
ϑΝΠϧ͔ΒͷಡΈࠐΈ w ࢝ΊΔલʹҎԼͷ63-͔ΒϑΝΠϧΛ%- IUUQTEMESPQCPYVTFSDPOUFOUDPNV $IBOHF-PH w NBDͷਓ DVSM0IUUQTEMESPQCPYVTFSDPOUFOUDPNV $IBOHF-PH w
$FOU04ͷਓ XHFUIUUQTEMESPQCPYVTFSDPOUFOUDPNV $IBOHF-PH
ϑΝΠϧ͔ΒಡΈࠐΜͰදࣔ w ϑΝΠϧ͔Βͯ͢ͷߦΛಡΈग़͠ɺඪ४ग़ྗʹ ग़ྗ͢ΔྲྀΕҎԼͷΑ͏ʹͳΔ ᶃ ϑΝΠϧΛ։͘ ᶄ ϑΝΠϧͷσʔλʢςΩετʣΛಡΈࠐΉ ᶅ ಡΈࠐΜͩσʔλΛग़ྗ͢Δ
ᶆ ϑΝΠϧΛด͡Δ
ϑΝΠϧ͔ΒಡΈࠐΜͰදࣔ w ϓϩάϥϜͰॻ͘ͱҎԼͷ௨Γ 1SFBE@UFYUSC࣮ߦ
ϑΝΠϧ͔ΒಡΈࠐΜͰදࣔ ᶃ ϑΝΠϧ໊Λऔಘ ᶄ pMFOBNFͱ͍͏໊લͷϑΝΠϧΛ։͘ ʢpMFΦϒδΣΫτͷऔಘʣ ᶅ ϑΝΠϧ͔ΒσʔλΛಡΈࠐΉ ᶆ σʔλΛඪ४ग़ྗʹදࣔ
ᶇ ϑΝΠϧΛด͡Δ
ϑΝΠϧ͔ΒಡΈࠐΜͰදࣔ ᶃ ϑΝΠϧ໊Λऔಘ ᶄ pMFOBNFͱ͍͏໊લͷϑΝΠϧΛ։͘ ʢpMFΦϒδΣΫτͷऔಘʣ ᶅ ϑΝΠϧ͔ΒσʔλΛಡΈࠐΉ ᶆ σʔλΛඪ४ग़ྗʹදࣔ
ᶇ ϑΝΠϧΛด͡Δ
ߦͣͭσʔλΛಡΈࠐΉ w ઌ΄ͲͷϓϩάϥϜʹ͕ܽଘࡏ͢Δ ᶃ ʹͯ͢ͷσʔλΛಡΈࠐΉͨΊɺσʔλ αΠζ͕େ͖͍ϑΝΠϧʹରͯ͠ߦ͏ͱଟ͘ ͷϝϞϦΛফඅͯ͠͠·͏ ᶄ ߦ͚ͩཉ͍͠߹ͰɺશͯಡΈࠐ·ͳ͚ ΕͳΒͳ͍
ߦͣͭσʔλΛಡΈࠐΉ w ߦͣͭಡΈࠐΉΑ͏ʹվྑ͢Δ͜ͱͰɺϝϞϦ ͷফඅྔΛ͑Δ͜ͱ͕Ͱ͖Δ 1SFBE@MJOFSC࣮ߦ
ϑΝΠϧͷத͔ΒಛఆͷύλʔϯΛؚΉߦΛ औΓग़͢ w HSFQίϚϯυͷΑ͏ͳػೳΛ࣮͠Α͏ w SVCZGPPSClݕࡧจࣈzlϑΝΠϧzͷΑ͏ͳܗ ࣜͰ࣮ݱ͍ͨ͠ w ͍͔ͭͧʹར༻ͨ͠SFHFYQͷύλʔϯϚον Λ࣮ͬͯ͢Δ
ϑΝΠϧͷத͔ΒಛఆͷύλʔϯΛؚΉߦΛ औΓग़͢ 1TJNQMF@HSFQSC࣮ߦ
ϑΝΠϧͷத͔ΒಛఆͷύλʔϯΛؚΉߦΛ औΓग़͢ ᶃ ϑΝΠϧ໊ͷऔಘ ᶄ 3FHFYQΦϒδΣΫτΛੜ ᶅ ϑΝΠϧΛ։͘ ᶆ ͯ͢ͷߦΛऔಘ
ᶇ ύλʔϯʹϚονͨ͠߹ɺͦͷߦΛग़ྗ ᶈ ϑΝΠϧΛด͡Δ
ϑΝΠϧͷத͔ΒಛఆͷύλʔϯΛؚΉߦΛ औΓग़͢ ᶃ ϑΝΠϧ໊ͷऔಘ ᶄ 3FHFYQΦϒδΣΫτΛੜ ᶅ ϑΝΠϧΛ։͘ ᶆ ͯ͢ͷߦΛऔಘ
ᶇ ύλʔϯʹϚονͨ͠߹ɺͦͷߦΛग़ྗ ᶈ ϑΝΠϧΛด͡Δ
ϝιουͷ࡞
ϝιουͷ࡞ w Ϣʔβʔ͕ಠࣗʹϝιουΛఆٛ͢Δ͜ͱ͕Ͱ ͖Δ w ϝιουΛ࡞͢Δ߹ɺҎԼͷΑ͏ͳߏจΛ ༻͍ͯ࡞͢Δ ϝιου໊ ϝιουͷத EFGΩʔϫʔυ
ϝιουͷ࡞ w ϝιουΛར༻͢Δʹݺͼग़͢ඞཁ͕͋Δ w ݺͼग़͠ҎԼͷ௨Γ w ϝιου͕ҾΛऔΒͳ͍߹ɺݺͼग़͢ࡍ ʹΧοίΛলུ͢Δ͖ R ?@?P
E ?@?P
ผͷϑΝΠϧΛಡΈࠐΉ
ผͷϑΝΠϧΛऔΓࠐΉ w ΄͔ͷϓϩάϥϜͰ࡞ͬͨػೳʢϥΠϒϥϦʣ ΛผͷϓϩάϥϜͰ͍·Θ͍ͨ͠ w ΈࠐΉʹSFRVJSF PSSFRVJSF@SFMBUJWF ϝιο υΛར༻͢Δ w
SFRVJSFlϑΝΠϧ໊zͱ͍͏ܗͰಡΈࠐΉϑΝ Πϧ໊ͷ֦ுࢠলུՄೳ w ࢦఆͨ͠ϑΝΠϧ͚ͩಡΈࠐ·ΕΔ
ผͷϑΝΠϧΛऔΓࠐΉ w SFRVJSFطଘͷϥΠϒϥϦΛಡΈࠐΉͨΊʹ ͏ w SFRVJSF@SFMBUJWFϝιουɺϓϩάϥϜͷΧϨ ϯτσΟϨΫτϦΛج४ʹͯ͠୳͢
ผͷϑΝΠϧΛऔΓࠐΉ w HSFQSCͱͯ͠ҎԼͷΑ͏ͳίʔυΛ࡞ 1HSFQSC
ผͷϑΝΠϧΛऔΓࠐΉ w HSFQSCΛಡΈࠐΈɺTJNQMF@HSFQΛར༻͢Δ w ༰ׂ͞Ε͍ͯΔͷͷɺઌ΄Ͳͷ TJNQMF@HSFQSCͱಉ༷ʹ࣮ߦՄೳ
1VTF@HSFQSCΛ࣮ߦ
ผͷϑΝΠϧΛऔΓࠐΉ w SVCZʹ༷ʑͳϥΠϒϥϦ͕ඪ४Ͱଐ͍ͯ͠ Δ w ྫ͑%BUFΫϥεʢʹؔΘΔΦϒδΣΫτʣ ҎԼͷΑ͏ʹར༻͢Δ
ࠓͷ·ͱΊ ͍Β͢ͱ
·ͱΊ w ίϚϯυϥΠϯҾΛ͏ʹɺ"3(7<JOEFY>ͰΞΫη ε w ϑΝΠϧΛಡΈࠐΉʹɺ'JMFPQFO lpMFOBNFz ͱͯ͠ ಡΈࠐΉ w
ϝιουEFGΩʔϫʔυΛ༻͍ͯఆٛ w ֎෦ϑΝΠϧΛಡΈࠐΉ࣌ɺSFRVJSF PS SFRVJSF@SFMBUJWF Λ͏ w SFRVJSFΈࠐΈͷϥΠϒϥϦɺͦΕҎ֎ SFRVJSF@SFMBUJWFΛ͏