Caude codeで爆速開発

Calude codeで開発の世界観が変わる。ジュニアプログラマ全滅か！？その凄さを引き出し、その罠を避ける技法！

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1. Claude code Ͱര଎։ൃ Codelynx July 2025 Tokyo
2. About me
3. Kaz Yoshikawa • Electricwoods LLC / Digital Lynx Systems Inc. / Slow-Walkers • e-mail: kyoshikawa@electricwoods.com • twitter: @codelynx5 • Working History • Adobe Systems (Tokyo) • Lionbridge (Tokyo) • Quark (Tokyo / Denver) • Hummingbird Communications (Mt. View, USA) • Fact International (Vancouver, Canada) • Perle Systems (Toronto, Canada), etc.
4. ؔΘ͖ͬͯͨ੡඼
7. Claude Code
8. Disclaimer Chat GPT / Claude / Claude code Ҏ֎৮͍ͬͯͳ͍
9. Claude Code
10. Pricing
11. Chat GPT oX 👍 • ϓϩϯϓτ͔Βೖྗ • ίʔυΛॻ͍ͯ͘ΕΔͷͰίϐϖͰ࢖͑Δ • Xcode ͱ࿈ܞͯ͠ɺύονΛ༻ҙͯ͘͠ΕΔ • ·͊·͊ෳࡶͳίʔυΛॻ͍ͯ͘ΕΔ
12. Chat GPT oX 👎 • ݁ہϑΝΠϧΛ·͕ͨͬͯɺߟ͑ͯ͘Εͳ͍ • ผͷϑΝΠϧʹ͋Δclass΍structΛਖ਼֬ʹ஌Βͳ͍ • ϏϧυΤϥʔ͸࢖͍ख͕ೳಈతʹߦ͏ඞཁ͕͋Δ • ࢼߦࡨޡͯ͠ϏϧυΤϥʔΛ௚ͯ͘͠Εͳ͍ • ߟ͑ํʹΑͬͯ͸ɺָ͍͠ίʔσΟϯάΛChat GPTʹ·͔ͤͯ • ͭ·Βͳ͍ϏϧυΤϥʔ΍όάͱΓΛ࢖͍ख͕΍ΔࣄʹͳΔʁ
13. Claude codeͷ͕͜͜ੌ͍
14. Claude codeͷ͕͜͜ੌ͍ • ίϚϯυͷύϥϝʔλͱ͔֮͑ͯͳͯ͘΋͍͍ײ͡ʹ୅ߦͯ͘͠ΕΔ commit, please • minor bug fi x ͱ͔ͷ͠ΐ΅͍ίϛοτΛ͍͍ײ͡Ͱ୅ߦͯ͘͠ΕΔ fixed some minor bugs • ίʔυॻ͚ͩ͘Ͱͳ͘ɺϏϧυΤϥʔ΋௚ͯ͘͠ΕΔ xcodebuild -scheme photolala -destination 'platform=macOS' -derivedDataPath build- test build 2>&1 | grep -E "(error:|FAILED|SUCCEEDED)" | tail -10
15. Claude codeͷ͕͜͜ੌ͍ • ͍͍ײ͡ʹɺެ։࢓༷ॻͳͲΛ୳ͯ͠μ΢ϯϩʔυͯ͘͠ΕΔ download PowerPoint format specification • ڊେͰෳࡶͳ࢓༷Λཧղͯ͘͠ΕΔ can you summaries specs in brief? • ؆୯ͳࣄ͔Β࢝ΊΕ͹ɺ࢓༷Λཧղͯ͠ɺࢼߦࡨޡͯ͠ؤுͬͯ͘ΕΔ can write swift code to parse and print number of pages of .pptx by reading sample.pptx
16. ࣗ཯తʹdebugͯ͘͠ΕΔ • ଞͷAIୡ͸ɺιʔείʔυΛཧղͯ͠ɺص্σόοάΛ͍ͯ͠Δײ͡ • Claude Code ͸࣮ߦͯ͠ϩάΛݟͯڍಈΛ೺Ѳ͢Δ • ࣗ෼Ͱprintจૠೖͯ͠ɺ࣮ߦͤͯ͞ɺϩάΈͯࢼߦࡨޡͯ͠ɺ্ख͘ಈ࡞ ͨ͠ΒɺprintจΛ࡟আͯ͘͠ΕΔ
17. ίʔυڍಈΛ෼ੳͯ͘͠ΕΔ 1. First star (at 0 seconds): - Photo 1 added to queue - resetInactivityTimer() is called - Line 146: inactivityTimer?.invalidate() - cancels any existing timer - Line 157: Starts a new 30-second timer - Log: [BackupQueueManager] Starting backup timer for 30 seconds - Log: [BackupQueueManager] Queue has 1 photos to upload, 0 to delete 2. Second star (at 10 seconds): - Photo 2 added to queue - resetInactivityTimer() is called again - Line 146: inactivityTimer?.invalidate() - cancels the previous timer (that had 20 seconds left) - Line 157: Starts a new 30-second timer - Log: [BackupQueueManager] Starting backup timer for 30 seconds - Log: [BackupQueueManager] Queue has 2 photos to upload, 0 to delete 3. After 30 seconds of no activity (at 40 seconds total): - Timer fi res - performAutoBackup() is called - Both photos are uploaded together - Log: Auto-backup triggered after 0 minutes of inactivity - Log: [BackupQueueManager] Starting upload of 2 photos
18. ෳࡶͳλεΫ͸ࡉ͔͘෼ղ͢Δ • ෳࡶͳλεΫ͸෼ׂͤ͞Δ • ෼ׂ͞ΕͨλεΫ͸͞Βʹ෼ׂͤ͞Δ • λεΫ͕γϯϓϧʹͳΔ·Ͱ෼ׂͤ͞Δ
19. ίʔυॻ͘લʹϓϥϯΛཱͯͤ͞Δ • Claude code͸͙͢ίʔυΛॻ͍ͯ͘Δ • ܭըॻʹίʔυΛॻ͔ͤΔ • ࣗ෼Ͱ͸ͳ͘ɺAIʹܭըॻΛॻ͔ͤΔ • AIʹॻ͔ͤΔͱɺࢦࣔ࿙Ε͕͸͖ͬΓ͢Δ • ͦ΋ͦ΋ɺܭըத͸ίʔυॻ͍ͯ͘Δͳͱ೦Λԡ͢ • ͦΕͰ΋༉அ͢Δͱ͙͢ίʔυॻ͍ͯ͘Δ
20. ͱʹ͔͘γϯϓϧʹ • AI͸ؾΛར͔ͤͯɺ͋ͬͨΒ͍͍ͳػೳΛ͠Εͬͱ࣮૷ͯ͘͠Δ • ͔͠͠ɺ৺Λَʹͯ͠ɺ୯७ͳγϯϓϧʹઃܭ͢ΔΑ͏ʹ৺͕͚Δ • ػೳͷมߋ͸ɺػೳͷ௥ՃΑΓ΋೉қ౓͕ߴ͍܏޲͕͋Δ
21. υΩϡϝϯτͷࢁ͕Ͱ͖ͨΒ੔ཧͤ͞Δ • υΩϡϝϯτΛॻ͔ͤͯࢼߦࡨޡ͢Δͱɺ͋ͬͱ͍͏ؒʹେྔͷจॻ͕ੜ ੒͞ΕΔ • ద࣌ɺυΩϡϝϯτΛ੔ཧͤ͞Δ • ϓϥϯɺݱঢ়ʢઃܭʣɺٞ࿦ɺΞʔΧΠϒʢࢿྉʣʹ෼ྨͤ͞Δ
22. ࢼߦࡨޡ͕ߦ͖٧·͍ͬͯΔࣄΛݟ͚ͭͯ͋͛Δࣄ • ϓϥϯʹͳ͍ɺίʔυΛॻ͖࢝ΊͨΒ࣮ߦΛͱΊΔࣄ • APIͷڍಈ͕૝ఆͱҧ͏ • OSͷόʔδϣϯʹΑͬͯ͸ར༻Ͱ͖ͳ͍ػೳ • ࣗಈӡస͸ঢ়گΛ͞ΒʹѱԽͤ͞ΔՄೳੑ
23. ߦ͖٧·ͬͨݱঢ়ͱܦҢΛϨϙʔτͤͯ͞ git reset • .git ʹ؅ཧ͞Εͳ͍ϑΥϧμΛ༻ҙ͢Δʢuntracked/ʣ • ߦ͖٧·ͬͨΒɺͲ͕͜ࠔ͍ͬͯͯɺԿ͕ো֐ͳͷ͔ΛৄࡉʹAIʹϨϙʔ τΛॻ͔ͤΔʢuntracked/ʣԼʹɻ • git reset ͯ͠࠷ॳʹ͜ͷϨϙʔτΛಡ·ͤΔɻ
24. ෳࡶͳλεΫΛ͓·͔ͤͰ΍Βͤͯ͠·͏ • ผ໊ɿίʔυΨνϟ
25. ؅ཧ؂ಜ஫ҙෆ଍ • ೋͭҎ্ͷϓϩδΣΫτΛࢼͯ͠Έͨ • ӈͱࠨͰผʑͷϓϩδΣΫτΛੜ੒ • ஫ҙ͕ߦ͖ͲͲ͔ͳ͍ঢ়ଶͰ໨Λᛉͬͯ൑Λԡ͢ঢ়ଶ͕ଓ͘ • ࢖Θͳ͍ػೳຬࡌͳͷʹɺ࢖Θͳ͍ػೳͷ͍ͤͰɺඞཁͳػೳ੍͕ݶ͞Ε Δɺ໨త͕ϒϨΔɺͳΜ͔͍͚ͯͳ͍ • ৽͍͠ػೳͷ࣮૷ΑΓɺطଘػೳͷมߋ͸૯ͯ͡೉౓͕ߴ͍໰୊ • ϓϩϯϓτͷԠ౴Λ଴͍ͬͯΔ࣌ؒ΋ܰࢹͯ͠͸͍͚ͳ͍
26. Examples
27. Credential code
28. Credential code • https://github.com/codelynx/credential-code • API_KEY, SECERT_KEY ͳͲηϯγςΟϒͳ৘ใΛJSONʹهड़ • ίϚϯυϥΠϯͰ҉߸Խ͞ΕͨιʔείʔυʹͳΔ • AES-256-GCM • ΞϓϦʹຒΊࠐΜͰ΋҆શʢΦʔϓϯιʔεʹ͸ෆద੾ʣ • Swift/Kotlin/Python/Java/C++ • Claude CodeͰ̍࣌ؒఔ
29. Swiftlet • ಈతͳWeb։ൃΛSwiftͰ • Paul Hudson ͷ Ignite ʹΠϯεύΠΞʔυ • HTML͕DSL • Ignite ͳ͔ͥ੩తαΠτͷΈ
30. Swiftlet ͸ಈతαΠτରԠ • ݸʑͷϖʔδ͸SwiftͷϓϩάϥϜ • index.swift • index.swift ͸ HTMLͷDSLͰهड़ • Swiftletͷαʔόʔ͸Pathʹ͋ΔSwiftͷ࣮ߦՄೳίʔυʢίϯύΠϧࡁΈʣ Λ࣮ߦɺੜ੒͞ΕͨHTMLΛฦ͢ • ࢓૊Έ͸ͻͱੲલͷCGIɺͰ΋ύϥϝʔλΛ౉͢ࣄͰಈతͳαΠτΛߏஙՄ ೳ
31. ੜ੒ίʔυྫ • codelynx͸αʔόʔ͸໳֎׽ • Ignite ͷίʔυ͕ɹMITͰ͋ΔࣄΛ֬ೝ • ϓϩδΣΫτʹigniteΛαϒϞδϡʔϧͰऔΓࠐΉ • AIʹIgniteͷDSLͷ࢓૊Έͷ࣮૷෼ੳϨϙʔτΛॻ͔ͤΔ • ͜ͷϨϙʔτΛݩʹɺCGIͷΑ͏ʹݸʑͷϖʔδ͕swiftԽͰ͖ΔΑ͏ʹ૬ஊ • ࠓճͷཁٻΛ੝ΓࠐΜͰɺίʔυੜ੒ͤ͞Δ • AWS EC2ʹରԠͤ͞Δ
32. swiftlet
33. Conclusion
34. ΞϓϦͷΧϯϒϦΞظ౸དྷʁ by Chat GPT
35. ΞϓϦɾγεςϜ։ൃઓࠃ࣌୅ • ެ։͞Ε͍ͯͯෳࡶ͕ͩཧղ͕ߦ͖ಧ͔ͳ͍࢓༷ͷϋʔυϧ͸௿͍ • ΞϓϦͷΞΠσΟΞ࣍ୈ • Πϯϑϥ஌ࣝͷͳ͍ΞϓϦΤϯδχΞͰ΋ΠϯϑϥབྷΊͨΞϓϦ։ൃ͕Մ ೳ • ΞϓϦͷ஌ࣝͷͳ͍ΠϯϑϥΤϯδχΞͰ΋ΞϓϦ։ൃՄೳ • ؂ಜ੹೚͕໰͑Δఔ౓ͷ஌ࣝ͸ඞཁ
36. Thank you