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なぜ僕はプログラミングが苦手なのか / Why am I not good at progra...
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VTRyo
February 01, 2019
Education
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なぜ僕はプログラミングが苦手なのか / Why am I not good at programming
2019.2.1 WEBエンジニア勉強会11
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February 01, 2019
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Transcript
WEBΤϯδχΞษڧձ#11 2019. 2.1
ʮͳͥϓϩάϥϛϯά͕ۤखͳͷ͔ʯ Presentation by VTRyo (Web Developer)
લະฉ ʰͰ͖ͳ͍ܥLTʱ ஏ֎ฉͳ͍ͷͰ͋Δ
͡Ί·ͯ͠ VTRyoͱॻ͍ͯϦϣͰ͢ Twitterʢ@3s_hvʣ ʢ@3s_hvʣ
͡Ί·ͯ͠ ʢ@3s_hvʣ גࣜձࣾϚπϦΧ SREνʔϜ ΤϯδχΞ࠾༻૭ޱ͡Ί·ͨ͠
͡Ί·ͯ͠ ʢ@3s_hvʣ झຯ స৬ࢧԉ ൃ৴͢ΔϚϯʢϒϩάɺొஃɺΠϕϯτओ ࠵ɺٕज़ಉਓࢽࣥචʣ ୭͔ͷਓੜΛฉ͘
స৬LT#4 Γ·͢ ݱࡏ४උத
ٕज़ॻయ
ͬͦ͘͞ຊ
લఏ Ansible, Terraformॻ͍͍ͯͨ ϓϩάϥϛϯάຊ֨తʹ࢝Ίͯ̐ϲ݄ ओͳ։ൃݴޠRubyʢRoRʣ SREͱͯ͠ύϑΥʔϚϯεվળʹணखத
લఏ ϓϩάϥϛϯά ͜Ε·Ͱ్தͰษڧΊΔ͜ͱ̎ճ ҰճେֶतۀͷPerlɺೋProgate ϝϯλʔͳ͠
ΤϯδχΞྺ̏ ϓϩάϥϛϯάྺ̐ϲ݄
Ώ͑ʹϨϕϧ̌
ҎԼʮ͓લηϯεͳ͍ʯ ېࢭ
ͳͥϓϩάϥϛϯά͕ۤखͳͷ͔ɺ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
ॳ৺ऀ͋Δ͋Δʁ or ͕͠ѱ͍ʁ ͠”ηϯε͕ͳ͍”
”ηϯε͕ͳ͍”ͰऴΘΒͤͯ͠·ͬͨΒ Կ࢝ΊΒΕͳ͘ͳΔͰ͠ΐʔ͕ʂ ηϯεͳ͍ͰऴΘΒͤͨ͘ͳ͍ͷͩ Ͱ…
͍ࣗ͟ݾੳʂ ઌഐΤϯδχΞҭઢͰʂ ಉ͡ਓҰॹʹ͕ΜΖ͏ʂ
ॳ৺ऀ͋Δ͋Δ ͦͯ͠ ࠷ॳͷน
Ͷ͑ɺΤϥʔจಡΜͰͳ͘ͳ͍ʁ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
·͡ͰಡΜͰͳ͍ύλʔϯ ಡΈղ͚͍ͯͳ͍ύλʔϯ Τϥʔൃੜʂͦͷͱ͖൴… ͕͢͞ʹࠓͳ͍Ͱ͢
·͡ͰಡΜͰͳ͍ύλʔϯ ΤϥʔͰͨ ͖ͬ͞ ॻ͍ͨͱ͔͜ ͘͞Ͷ Τϥʔݟͯͳ͍
ࣗͰॻ͍ͨॴ͕ѱ͍ͷΘ͔ͬͯΔ ͔ͩΒͦ͜Λม͑Δʢಡ·ͣʹม͑ʹ͍ͬͪΌ͏ʣ ͰԿ͕ѱ͍͔ಡΜͰͳ͍͔ΒదͳରԠʹͳΒͳ͍ Α͏͘Τϥʔಡ͏ͱ͢Δ Կॻ͍ͯ͋Δ͔Θ͔Βͳ͍͠खؒ ৺ཧঢ়ଶʢ̍ྫʣ ࠷ॳ͜Ε ͳΜ͡Όͳ͍͔ͳ
͜͏ͯ͠ѱ॥ϧʔϓ
յΕͨΓ͠ͳ͍͔Β ͖߹͏บΛ
ಡΈղ͚ͯͳ͍ύλʔϯ γϯϓϧʹಡΈඈ͍ͯ͠ΔʢಡΜͰͳ͍ͱ ݴ͏ʣ ܦݧෆͰؾ͚ͮͯͳ͍
ܦݧෆͰؾ͚ͮͯͳ͍ NoMethodError: undefined method ͺͬͱݟ͙ͯ͢Θ͔Δਓ ͦΕ͚ͩܦݧ͖ͯͨ͠ͱ͍͏͜ͱ ͙ͨͩ͢͠ʹݕ౼͕͔ͭ͘ͷࠩ ͖߹͍ͬͯΕΘ͔ΔΑ͏ʹͳΔ Xyz::JobBase Error:
Called abstract method.
ಡΈղ͚ͯͳ͍ύλʔϯ ʮ͜͜ʹॻ͍ͯ͋Δ͡ΌΜʂʯ ͕અ݀ͰࢮΛܴ͑Δ
ܦݧ͖߹ͬͨͰมΘΔ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
Α͏͘࠷ॳͷนΛյ͢ ͔͍ͬͯͨ͠͠ͷࣗ৴ࣦ
ϓϩάϥϛϯά͕ۤख͔͠Εͳ͍ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
ͳΜ͔࠷ॳͷนյ͢ͷʹ ͍͔͔࣌ؒͬͨ͢͝…
͔͠ Twitterʹ͍ΔΈΜͳ ͭΑ͍ͻͱ͔ͬ͡ΌΜ…ʁ
ΈΜͳ͕ηϯεͰ͖ͬͯͨ͜ͱ ҙࣝͯ͠Α͏͘Ͱ͖ͨ
ίʔυᘳʹॻ͚ΔΘ͚͡Όͳ͍͠ ͜ͷ··Ͱμϝ͔…
ࣗ৴Λͳͨ͘͠ɺϚωʔδϟʔʹ͋Δر Λ͑·ͨ͠ ͏ͩΊ͔
ϚωʔδϟʹݴΘΕͨ͜ͱ
– By Manager “ͨͱ͑αϙʔτΛड͚ͳ͕ΒͰϓϧϦΫΛग़ ͨ͠Μͩ͠ɺػೳͯ͠ΔΜ͡Όͳ͍Ͱ͔͢”
None
ͦ͏͔ɻ͘͠ߟ͑͗ͯͨ͢
࣮ޭମݧ͋ͬͨͣͩ
Τϥʔಡ·ͳ͍ͩͬͯ ͪΐͬͱͣͭमਖ਼͖ͯͨ͠
ʮϓϩάϥϛϯάͰ͖Δʯͷϋʔυϧ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
࠷ॳ୭͕ΦϨΦϨίʔυ͡Όͳ͍ͷ͔͍ ʮᘳʹʯͬͯԿΛͬͯᘳͳͷ͔ɻͦ ͦᘳͳͷͳ͍ ϋʔυϧউखʹ্͛ͯΔ
ॳ৺ऀ͋Δ͋Δʁ or ͕͠ѱ͍ʁ ͠”ηϯε͕ͳ͍” ࠷ॳͷ͍
ηϯεͱɺ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
ηϯε͋Δਓɿ͜Ε·Ͱͷڥܦݧɺश׳ ʹΑΓඞཁͳײ͕֮උΘ͍ͬͯΔਓ ηϯε͕ͳ͍ਓɿ·ͩश׳͕උΘ͍ͬͯͳ͍ ͚ͩ ηϯεͱɺ ͨͱ͑ தֶੜͷͱ͖͔ΒHP࡞ͬͯͨਓͱ͔
ηϯεͱɺྑ͍श׳ͷੵΈॏͶͰͳ͍͔ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
ͳΒɺʹΕΔ͜ͱ͋Δ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
ͦ͏৴ͯ͜͡Ε͔ΒਐΉ ϓ ϩ ϑ Σ ο γ ϣ φ ϧ
ʹ ͳ Γ ͨ ͍
Please Teach me!! I’m very quick on the uptake
࠳ંͨ͠Βɺಡ͏ɻ
ʮͳͥϓϩάϥϛϯά͕ۤखͳͷ͔ʯ Presentation by VTRyo (Web Developer)