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Marie and Me
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track8
September 22, 2013
Business
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Marie and Me
とちぎRuby会議05懇親会駄話
track8
September 22, 2013
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Transcript
ϚϦʔͱΘͨ͠ Marie and Me 2013/09/21 @track8
ࣗݾհ ‣ @track8ɹ ‣ ͙Μ·ͷαϥϦʔϚϯ / ϓϩάϥϚ ‣ ͙Μ·Rubyձٞ01Ͱ ͓ੈʹͳΓ·ͨ͠
ۙگ
ۙگ
࠲ӈͷ
࠲ӈͷ ‣ ”ύϯ͕ແ͚Εɺ έʔΩΛ৯Ε͍͍͡Όͳ͍”
࠲ӈͷ ‣ ”ύϯ͕ແ͚Εɺ έʔΩΛ৯Ε͍͍͡Όͳ͍” ϚϦʔɾΞϯτϫωοτ
ͳʹ͕ྑ͍͔ ‣ ࠷ۙʹͳͬͯδϫδϫ͖͍ͯΔݴ༿ ‣ ͦ͜(ύϯɺέʔΩ)͡Όͳ͍ͬͯ ͜ͱΛڭ͑ͯ͘ΕΔ
tweet ‣ Կ͔Ζ͏ͱͨ͠ͱ͖ʹ ͭͿ͍ͯΈΔɻ ‣ ࣗୡ͕ղ͜͏ͱ͍ͯ͠ΔԿ͔ ‣ ʙͳΒʙ͍͍͡Όͳ͍
ϚϦʔ ‣ Ұ୴ཱͪࢭ·ͬͯɺݴͬͯΈΔ ‣ ϚϦʔύλʔϯ ‣ Ξϯτϫωοτઢ
ۙͳྫ ‣ NullReferenceͷྫ֎͕ͰͨΒnullνΣο Ϋ͢Ε͍͍͡Όͳ͍ ‣ ྫ֎͕ग़ͨͳΒɺѲΓͭͿ͍͍ͤ͡Ό ͳ͍ ‣ ༷ॻ͕ແ͍ͳΒιʔεΛݟΕ͍͍͡ Όͳ͍
ਖ਼ղͷ߹ ‣ ίϯςΩετ͕ҧ͑ਖ਼͍͠ࣄ͋Δ
࠷ۙͷྫ ‣ NullReferenceͷྫ֎͕ͰͨΒnullνΣο Ϋ͢Ε͍͍͡Όͳ͍ ‣ ྫ֎͕ͰͨͳΒɺѲΓͭͿ͍͍ͤ͡Ό ͳ͍ ‣ ༷ॻ͕ແ͍ͳΒιʔεΛݟΕ͍͍͡ Όͳ͍
࠷ۙͷྫ ‣ NullReferenceͷྫ֎͕ͰͨΒnullνΣο Ϋ͢Ε͍͍͡Όͳ͍ ‣ ྫ֎͕ͰͨͳΒɺѲΓͭͿ͍͍ͤ͡Ό ͳ͍ ‣ ༷ॻ͕ແ͍ͳΒιʔεΛݟΕ͍͍͡ Όͳ͍
/VMMΛड͚ΔࣄΛఆ͍ͯ͠Δ߹˓
࠷ۙͷྫ ‣ NullReferenceͷྫ֎͕ͰͨΒnullνΣο Ϋ͢Ε͍͍͡Όͳ͍ ‣ ྫ֎͕ͰͨͳΒɺѲΓͭͿ͍͍ͤ͡Ό ͳ͍ ‣ ༷ॻ͕ແ͍ͳΒιʔεΛݟΕ͍͍͡ Όͳ͍
/VMMΛड͚ΔࣄΛఆ͍ͯ͠Δ߹˓ ผʹΒͤͨ͘ͳ͍ྫ֎˓
࠷ۙͷྫ ‣ NullReferenceͷྫ֎͕ͰͨΒnullνΣο Ϋ͢Ε͍͍͡Όͳ͍ ‣ ྫ֎͕ͰͨͳΒɺѲΓͭͿ͍͍ͤ͡Ό ͳ͍ ‣ ༷ॻ͕ແ͍ͳΒιʔεΛݟΕ͍͍͡ Όͳ͍
/VMMΛड͚ΔࣄΛఆ͍ͯ͠Δ߹˓ Α͋͘Δ ผʹΒͤͨ͘ͳ͍ྫ֎˓
Ξϯτϫωοτઢ ‣ ࢲͷΑ͏ͳ۪ຽʹແ͍৽ͨͳࢹ ‣ ϗϯτͷͦΕྑ͍ͷʁ ‣ ৭ʑͳ͔֯Β؍ͯΈΑ͏ ‣ Կࣄਖ਼͍͠໘ͱѱ͍໘͕͋Δ
ઈରѱ ‣ ΈΜͳ͕ಡΊΔ͔Β༷ॻExcelͰॻ͚ ͍͍͡Όͳ͍ ‣ όʔδϣϯཧπʔϧΛΘͳ͍ͳΒɺ มߋཤྺίϝϯτʹॻ͚͍͍͡Όͳ ͍
ઈରѱ ‣ ΈΜͳ͕ಡΊΔ͔Β༷ॻExcelͰॻ͚ ͍͍͡Όͳ͍ ‣ όʔδϣϯཧπʔϧΛΘͳ͍ͳΒɺ มߋཤྺίϝϯτʹॻ͚͍͍͡Όͳ ͍ Ίͯ
ઈରѱ ‣ ΈΜͳ͕ಡΊΔ͔Β༷ॻExcelͰॻ͚ ͍͍͡Όͳ͍ ‣ όʔδϣϯཧπʔϧΛΘͳ͍ͳΒɺ มߋཤྺίϝϯτʹॻ͚͍͍͡Όͳ ͍ Ίͯ ͬͯ
৹ٞத ‣ privateͳmethodʹinstance_evalͰΞΫ ηεͪ͠Ό͍͍͑͡Όͳ͍ ‣ Πϯελϯεมʹinstance_evalͰΞ Ϋηεͪ͠Ό͍͍͑͡Όͳ͍
ۙͳྑ͍ྫ ‣ ಢ͕ԕ͍ͳΒ ܈അʹ͘Ε͍͍͡Όͳ͍
Ϗό ‣ ϏόɾΞϯτϫωοτ
࠷ޙʹ ‣ ϚϦʔ͚ͩʹΫϏΛ ΒΕͳ͍Α͏ʹ ‣ ແࣄʹ2013ԼظΛ ܴ͍͑ͨͰ͢