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タイムゾーンの基礎教養/swamp of timezone
kumatira
November 19, 2018
Education
2
900
タイムゾーンの基礎教養/swamp of timezone
2018年11月22日の秋の夜長の自由研究LT大会で発表したLTです
イベントページ→
https://engineers.connpass.com/event/104940/
kumatira
November 19, 2018
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Transcript
ϰΝϧݚڀॴ"1*1MBUGPSN5FBN ۽ਅ !LVNBUJSB λΠϜκʔϯͷ جૅڭཆ
ࣗݾհ ۽ਅ ͘·ͷ ͦ͏· !LVNBUJSB LVNBUJSBCMPH • ϰΝϧݚڀॴೖࣾ ◦ "1*1MBUGPSN5FBNॴଐ
◦ ։ൃɾӡ༻ɾαϙʔτɾใ • झຯɿཧ ਤཧݕఆڃ ཱྀߦ
ࣗݾհ ϓϩϘϊͬͯ·͢ גࣜձࣾϐϦΧ ʮՊֶٕज़ͷྗͰ͋ΒΏΔ
ڥΛࠀ͢Δʯ
ΤϯδχΞͷօ͞Μ
͍ͭʹ
αϚʔλΠϜΛ
ଧͪࡅ͖·ͨ͠ ຊܦࡁ৽ฉʮࣗຽɺޒྠ࣌ͷαϚʔλΠϜஅ೦ʯ݄ேץ
͑ͬ
αϚʔλΠϜΛΒͳ͍
ͦΜͳਓ
None
ͺͨͦ͘͞Μͷ ը૾Λͱʹ࡞ͬͨ ஶ࡞ݖతʹਖ਼͍͠ ΩϞʔΠΨʔϧζ
λΠϜκʔϯ
࣌ࠩ
αϚʔλΠϜʹ͍ͭͯ
෮श͠Α͏
ຊͷλΠϜκʔϯ ͦͦ
ຊඪ४࣌ˠੈքͷඪ४࣌65$͔Β ࣌ؒਐΜͰ͍Δ
ຊඪ४࣌ˠ65$
65$ ʹ ؖࠃɺϩγΞ Ұ෦ ɺΠϯυωγΞ Ұ෦ ͳͲ
Ͱ
࣌ࠩΛදࣔ͢Δ ϓϩάϥϜΛ࡞Δ࣌ɾɾɾ ྫ͑
࣌ࠩΛ࣌ؒ୯ҐͰදݱͰ͖Ε 0,ͩΑͶ l̋̋ࠃͱ99ࠃͷ࣌ࠩ\UJNF@EJ⒎FSFODF^࣌ؒͩΑz
ͦΜͳਓ
None
ΦʔετϥϦΞத෦ඪ४࣌ ΞσϨʔυͳͲ 65$ ωύʔϧඪ४࣌
65$ ΠϯυͷϜϯόΠ ·Ͱ 65$ μϝͰ͢
͡Ό͋ɾɾɾ
࣌ࠩ୯ҐΛදݱͰ͖Ε 0, ͜͜·Ͱఆ
ͦΜͳਓ
None
μϒϦϯฏۉ࣌ ɹɹɹ65$ ΞΠϧϥϯυ ·Ͱ l*O*SFMBOErXIFSFUIFTVO BTNFBTVSFECZUIF%VOTJOL 0CTFSWBUPSZ SPTFNJOVUFTBOETFDPOETMBUFSUIBOBU (SFFOXJDIrUJNFXBTP⒏DJBMMZEFpOFEBT%VCMJO.FBO5JNFzɹɹɹɹɹ
5IF*SJTI5JNFTͷهࣄΑΓ μϝͰ͢
μϒϦϯฏۉ࣌ ΞΠϧϥϯυ ·Ͱ 65$ ϞϯϩϏΞඪ४࣌ ϦϕϦΞ
·Ͱ 65$ Ϡϯΰϯඪ४࣌ ϛϟϯϚʔ ·Ͱ 65$ μϝͰ͢
͓खݩͷ04 ରԠͣΈͰ͢ 6/*9ͳͲͰར༻͞ΕΔ U[EBUBCBTFͷμϒϦϯ࣌ؒ
ྺ࢙తͳΠϕϯτ ͷ࣌ࠁΛࢀর͢Δ࣌ඞཁ
͡Ό͋ɾɾɾ
࣌ࠩඵ୯ҐΛදݱͰ͖Ε 0,
None
Ξϧθϯνϯඪ४࣌ ·Ͱ 65$ Ϛυϥεৗ༻࣌ Πϯυ
·Ͱ 65$ ΞϜεςϧμϜඪ४࣌ Φϥϯμ ·Ͱ 65$ μϝͰ͢
U[UJNF[POFͰɺ ͕ٞ͞Ε͍ͯΔ͕ ରԠ͍ͯ͠ͳ͍
ඵҎԼͷਫ਼͕ٻΊΒΕΔ࣌ඞཁ ఱจֶͱ͔
λΠϜκʔϯͷϠό͕͞ Θ͔ͬͨͱ͜ΖͰ
αϚʔλΠϜͬͯ Ͱ·ͣ
αϚʔλΠϜͬͯ Նͷؒɺඪ४࣌ΛਐΊΔ͜ͱͰɺ ޫͷग़͍ͯΔ࣌ؒΛ༗ޮ׆༻͢Δ੍ Ͱ·ͣ
IUUQTXXXOJLLFJDPNBSUJDMF%(9.;08"$ ຊͰ
ਐΊΔͱ͖ य़ ˠ ͢ͱ͖ ळ ˠ ྫ͑
Կ͕͍ͷ͔
࣮ฐࣾ ϰΝϧݚڀॴ ܦ࿏୳ࡧαʔϏεʮӺ͢ͺ͋ͱʯ Λ࡞͍ͬͯ·͢
ߴԁࣉൃ ˣ ॴཁ࣌ؒ ˣ Ѩࠤϲ୩ண Έ͍ͨͳྻं͕ര͢Δ य़ʹ
ۭؔߓൃ ˣ ॴཁ࣌ؒ ˣ ͳΜӺલண Έ͍ͨͳόε͕ര͢Δ ळʹ
ۭؔߓൃ ˣ ॴཁ࣌ؒ ˣ ͳΜӺલண Έ͍ͨͳόε͕ര͢Δ ळʹ ͜ͷޙ ճͷ
͕ ൃੜ͢Δ
࣌ࠁ୯७૿Ճͳͷ ͱ࣮͍ͯͯ͠͠Δͱɾɾɾ %#ͷλΠϜελϯϓͱ͔
None
͡Ό͋ɾɾɾ
αϚʔλΠϜ࣮ࢪ࣌ʹ ࣌ؒਐΉPSΔΑ͏ʹ ͢Ε0,
None
࣌ؒͱݶΒͳ͍ ΦʔετϥϦΞͷϩʔυɾϋౡͰਐΊΔ ݄ˠ݄ IUUQTKBXJLJQFEJBPSHXJLJϩʔυɾϋౡ
࣌ؒͱݶΒͳ͍ ೆۃͷτϩϧج ϊϧΣʔ Ͱ࣌ؒਐΊΔ ݄ˠ݄ IUUQTFOXJLJQFEJBPSHXJLJ5SPMM@ SFTFBSDI@TUBUJPO
IUUQTXXXBTBIJDPNBSUJDMFT"4-89;-86521/IUNM ࣌ؒͱݶΒͳ͍ զ͕ࠃ࣌ؒͰ ݕ౼͍ͯͨ͠Β͍͠
͡Ό͋ɾɾɾ
ͱΓ͋͑ͣαϚʔλΠϜͷPOP⒎ ΛΓସ͑Ε0, ࣌ࠁͷೖྗϑΥʔϜͱ͔
None
ӳࠃೋॏՆ࣌ؒ ʙ ௨ͰαϚʔλΠϜ 65$ Λ࣮ࢪ্ͨ͠Ͱ ɹɹՆقʹ͞ΒʹαϚʔλΠϜ 65$
Λ࣮ࢪ ݄ʙ݄Λʮय़ɾळ࣌ؒʯ 65$ ͱ্ͨ͠Ͱ ݄ʙ݄ʹαϚʔλΠϜ 65$ Λ࣮ࢪ μϝͰ͢
͜Ε͙Β͍ʹ͠ͱ͖·͢
• ࠃʹෳͷλΠϜκʔϯ • λΠϜκʔϯҠߦͰؙͬ͢ඈͨ͠ࠃ • ඇެࣜͳλΠϜκʔϯ ͦͷଞʹ
λΠϜκʔϯ༻๏༻ྔΛकͬͯ ָ࣮͘͠͠·͠ΐ͏
͋Γ͕ͱ͏͍͟͝·ͨ͠ !LVNBUJSB