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株式会社ミクシィ新卒研修 - テスト/設計研修
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Kuniwak
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January 21, 2018
Programming
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株式会社ミクシィ新卒研修 - テスト/設計研修
2017 年に実施した「テスト/設計研修」の資料です。
Kuniwak
PRO
January 21, 2018
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Transcript
ςετઃܭݚम
ࠓͷඪ
͍͍ઃܭͷΓํΛ֮͑Δ ͜Ε͚ͩʂ
͍͍ઃܭͷ݅
͍͍ઃܭͷ݅ͱͯ͠ ࢥ͍ͭ͘ͷ͋Γ·͔͢ʁ
ૄ݁߹ʁ%3:ʁ Մಡੑʁ
͍͍ઃܭͷ݅ ܦӦతͳཁٻɾ݅ʹ Ԡ͑ΒΕΔ͜ͱ ྫ͑ɺܦӦͷཁٻ͕εϐʔυ༏ઌͷͱ͖ɺ อकͮ͠Β͍ઃܭͰਖ਼ղͳ͜ͱ͕͋Δ
w ଟ͘ͷ߹ɺอक͍͢͠ઃܭ͕ਖ਼ٛ w ༷มߋɾϝϯόʔมߋಥવͬͯ͘Δʜ w ͦͷͱ͖ɺอक͕͢͠͞ͳ͍ͱ͕ ͨͩ͠
͜ͷݚमͰอक͢͠͞ʹ যΛ͋ͯ·͢
͍͍ઃܭͷ͔ͨ͠ อक͍͢͠
ςετΛ ઌʹॻ͘
ςετΛ ࣦഊͤ͞Δ
࣮ͯ͠ ςετΛ ޭͤ͞Δ
ʊਓਓਓਓਓਓਓਓਓʊ ʼɹςετۦಈ։ൃɹʻ ʉ̮̮̮̮̮̮̮̮̮ʉ
ςετۦಈ։ൃΛମݧͯ͠Β͏ཧ༝ w ςετ͕ઌͳͷͰɺςετͮ͠Β͍ίʔυΛ ॻ͚ͳ͍ w ςετ͍͢͠ίʔυɺૄ݁߹Ͱ෭࡞༻͕ গͳ͘ɺذগͳ͍ w ͭ·ΓɺςετΛઌʹॻ͘ͱɺࣗવʹ อक͍͢͠ઃܭͱಋ͔ΕΔͱ͍͏͜ͱ
श͏ΑΓ׳Εͯ΄͍͠ͷͰʜ
ମݧͯ͠Έ·͠ΐ͏ʂ
ຊͷ՝ ं૭͔Βͷ5%% ࢿྉݕࡧͯ͠Ͷʂ
ͦΖͦΖɺςετۦಈ։ൃ Θ͔͖ͬͯ·ͨ͠ʜʁ
͍࣍ͬͯΈ·͠ΐ͏ʂ
҉తೖग़ྗ อक͢͠͞ͷఢ
doSomething(x) Ҿ Γ ςετ؆୯ ໌ࣔతͳೖྗͱग़ྗ
doSomething(x) Ҿ Γ ҉తͳೖྗͱग़ྗ େҬมͳͲ ଞͷςετ͕յ͔͢ ଞͷςετΛյ͔͢ େҬมͳͲ
ཁ͢ΔʹɺҾҎ֎ͷมࢀর ΓҎ֎ͷมߋςετͮ͠Β͍ ʢͷͰɺ5%%ͬͯΔͱͳΜͱ͔ͨ͘͠ͳΔͣʣ
ೖग़ྗΛ໌ࣔతʹ͢Δͱɺଞͷ ґଘͷଟ͕͞ݟ͑ΔΑ͏ʹͳΔ
ҾΛͨ͘͞Μॻ͘ͷͱͯਏ͍ ͦͷ͏ͪϦϑΝΫλϦϯά͢Δ ؾ͕࣋ͪߴ·Δ
͋ͬɺઃܭ͖Ε͍ʹͳͬͨ
ʊਓਓਓਓਓਓਓਓਓʊ ʼɹ5%%࠷ߴʂʂʻ ʉ̮̮̮̮̮̮̮̮̮ʉ
ຊͷ՝ ʬ63-ൿີͰ͢ʭΛ ϖΞϓϩͰղ͍͍ͯͩ͘͞ʂ Ұճ͔͠࠾͠ͳ͍ͷͰҙʂ
҉తͳೖग़ྗΛ ςετ͔Βଊ͑Δ ิࢿྉ
doSomething(x) Ҿ Γ ҉తͳೖྗͱग़ྗ େҬมͳͲ ଞͷςετ͕յ͔͢ ଞͷςετΛյ͔͢ େҬมͳͲ
doSomething(x) Ҿ ҉తͳೖྗͱग़ྗ େҬมͳͲ ࣄલʹઃఆͨ͠ৼΔ͍Λ͢Δ ِͷΦϒδΣΫτ ελϒ
doSomething(x) Γ ҉తͳೖྗͱग़ྗ େҬมͳͲ ِͷؔΦϒδΣΫτͰɺ ݺͼग़ࣗ͠ͷมߋΛه͢Δ εύΠ
ෳࡶͳ༷ อक͢͠͞ͷఢ
ෳࡶͳ༷ͩͱίʔυෳࡶʹͳΔ ͪΖΜςετෳࡶʹͳΔ
͔༷͕͠͠؆୯ʹͳΔͱ͔ ੈͷதͦΜͳʹ͘ͳ͍
ͭ·ΓςετෳࡶʹͳΔͷ ͨͩ͠ෳࡶͳςετॻ͖ͮΒ͍ ʢͷͰɺ5%%ͬͯΔͱͳΜͱ͔ͨ͘͠ͳΔͣʣ
ࠓճɺຊମίʔυͱಉ͡Α͏ʹ ςετͷ%3:Λؾʹ͍ͯͩ͘͠͞
ຊͷ՝ ʬ63-ൿີͰ͢ʭΛ ϖΞϓϩͰղ͍͍ͯͩ͘͞ʂ
·ͱΊ
͍͍ઃܭͷ݅ ܦӦతͳཁٻɾ݅ʹ Ԡ͑ΒΕΔ͜ͱ ྫ͑ɺܦӦͷཁٻ͕εϐʔυ༏ઌͷͱ͖ɺ อकͮ͠Β͍ઃܭͰਖ਼ղͳ͜ͱ͕͋Δ
อक͕ॏཁͳͱ͖ ςετۦಈ։ൃ͕ Α͍ઃܭΛͭ͘Γ·͢