複雑さに立ち向かうためのコードリーディング入門

2023/09/03 iOSDC J
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ෳࡶ͞ʹཱͪ޲͔͏ͨΊͷ
ίʔυϦʔσΟϯάೖ໳
01
010
0101
0
01
010
0101
0

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໊લTIJ[ ͣ͠

J04ΤϯδχΞJO෱Ԭ
!TU[O
TU[O
4XJGUݴޠΨΠυ೔ຊޠ൛
TXJGUPSH
Amazon Amazon
ࣗݾ঺հ

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ུྺ
•େֶଔۀޙɺҩྍۀքͰಇ͘
ઐ໳ྖҬ: ೝ஌ػೳʹؔΘΔ࣬ױ
•ޙʹιϑτ΢ΣΞΤϯδχΞʹͳΔ
ࣗݾ঺հ

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෺ࣄΛཧղͨ͠Γɺ֮͑ͨΓɺ
ߟ͑ͨΓ͢Δೳྗ
ೝ஌ػೳ
ೝ஌ػೳͱ͸ʁ

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෺ࣄΛཧղͨ͠Γɺ֮͑ͨΓɺ
ߟ͑ͨΓ͢Δ಄ͷಇ͖
ೝ஌ϓϩηε
ྫ: ಁ໌Ͱؙ͘ɺ৮Δͱྫྷ͍ͨ΋ͷ͕͋Δ
ͦΕ͸աڈͷهԱ͔ΒණͩͱΘ͔ͬͨ
৮Γଓ͚Δͱख͕௧͘ͳΔͱࢥͬͨͷͰखΛ཭ͨ͠
ࣗݾ঺հ

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ೝ஌ϓϩηεΛ׆༻ͨ͠
ίʔυͷಡΈํ
ࣗݾ঺հ

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͜ͷൃදͰ͸
͞·͟·ͳݚڀ݁Ռʹج͍ͮͨ
ߟ͑΍ςΫχοΫͷҰ෦Λ঺հ
ࣗݾ঺հ

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ຊ೔ͷ಺༰
•ίʔυͷಡΈํʹয఺Λ౰ͯͨಈػ
•ͳͥෳࡶʹײ͡Δͷ͔ʁ
•ෳࡶ͞΁ͷରࡦ
•ίʔυͷॻ͖ํʹ΋׆༻͢Δ

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ίʔυͷಡΈํʹ
য఺Λ౰ͯͨಈػ
ίʔυͷಡΈํʹয఺Λ౰ͯͨಈػ

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👨💻
ιϑτ΢ΣΞΤϯδχΞͷ࢓ࣄ
👩💻
Φʔϓϯιʔε طଘίʔυϕʔε PRϨϏϡʔ

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😵💫
Θ͔Βͳ͍ͳ͋
ಡΜͰ΋Θ͔Βͳ͍
Φʔϓϯιʔε طଘίʔυϕʔε PRϨϏϡʔ

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ௐ΂Δ
📖
👀
💦
👀
💦
📃
📝
🖥
📄
👨💻

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😨 Ͱ΋͕࣌ؒ….
·ͩΘ͔Βͳ͍….
·ͩΘ͔Βͳ͍ɺ࣌ؒʹ௥ΘΕΔ
৽͍͠λεΫ
…

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΋ͬͱௐ΂Δ
📖
👀
💦
👀
💦
📃
📝
🖥
📄
👨💻
👀
💦
👀
💦
📖 📃
🖥
👩💻

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😔
ࣗ෼ͬͯμϝͩͳ͋….
Θ͔ͬͨɺͰ΋ͳ͋ɺɺɺ
🪫

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•೴಺Ͱॲཧ͢΂͖৘ใ͕ଟա͗ͯɺ೴͕ർ࿑Λى͜
͠ɺػೳ͕௿Լ͍ͯ͠Δ͜ͱͰى͜ΔҰ࿈ͷ঱ީ
ྫ: ࢥ͍ग़ͤͳ͍ɺܾΊΒΕͳ͍ɺཧղͰ͖ͳ͍
৘ใաଟγϯυϩʔϜ
https://kenko.sawai.co.jp/healthcare/202001.html

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͜Μͳঢ়گΛଧഁ͍ͨ͠
😔
🪫
😵💫
Θ͔Βͳ͍ͳ͋
📖
👀
💦
👀
💦
📃
📝
🖥
📄
👨💻
😨
Ͱ΋͕࣌ؒ….
·ͩΘ͔Βͳ͍….
📖
👀
💦
👀
💦
📃
📝
🖥
📄
👨💻
👀
💦
👀
💦
🖥
📖
👩💻
📃

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ௐ΂ͯΈΔͱ
•ίʔυͷಡΈํͱೝ஌ػೳ͸ؔ܎͍ͯ͠ΔΒ͍͠

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ௐ΂ͯΈΔͱ
•ίʔυΛಡΉ࣌ؒ ॻ࣌ؒ͘ in ։ൃۀ຿
>

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ௐ΂ͯΈΔͱ
•ҙࣝతʹίʔυͷಡΈํΛֶͿػձ͸গͳ͍
>

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ͭ·Γ
•Մೳੑ: ίʔυΛಡΉྗ⬆
➡︎
։ൃۀ຿ͷޮ཰⬆
>

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΍ͬͯΈͯ
•Մೳੑ: ίʔυΛಡΉྗ⬆
➡︎
։ൃۀ຿ͷޮ཰⬆
•࣮ࡍ: ͪΐͬͱָʹͳͬͨؾ͕͢Δ
>

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͜ͷൃදͰݴ͏ʮෳࡶʯͱ͸
•ԿΛ͍ͯ͠Δͷ͔Θ͔Βͳ͍
•Θ͔Δ·Ͱʹ͍͕͔͔࣌ؒ͢͝Δ
•΍Δ͜ͱ͕ଟա͗ͯ௥͍͖Εͳ͍
ෳࡶͷఆٛ

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ͳͥෳࡶʹײ͡Δͷ͔ʁ

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ࢼͯ͠ΈΔ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ΫΠζ

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͜͜ͰΫΠζͰ͢

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ΫΠζᶃ

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05
04
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02
01
00
Կ͕ग़ྗ͞ΕΔʁ
MOo MOo MOo moO MOo moO MOo moO moO MoO moO MoO moO moO MoO
MOO MoO MoO MoO MoO MOO moO MoO MoO MoO MOO moO MoO MoO MoO
MoO moO MOo MOo moO MoO MoO MoO mOo mOo mOo MOo moo mOo MOo
moo mOo MoO MoO MoO moo moO moO moO Moo moO MOo MOo moO MOo
Moo moO Moo Moo MoO moO MoO MoO MoO MoO moO MoO MoO MoO Moo
MoO moO MOo MOo moO MOO moO MOo Moo mOo mOo moo
00:

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ԿΛ͍ͯ͠Δʁ
MOo MOo MOo moO MOo moO MOo moO moO MoO moO MoO moO moO MoO
MOO MoO MoO MoO MoO MOO moO MoO MoO MoO MOO moO MoO MoO MoO
MoO moO MOo MOo moO MoO MoO MoO mOo mOo mOo MOo moo mOo MOo
moo mOo MoO MoO MoO moo moO moO moO Moo moO MOo MOo moO MOo
Moo moO Moo Moo MoO moO MoO MoO MoO MoO moO MoO MoO MoO Moo
MoO moO MOo MOo moO MOO moO MOo Moo mOo mOo moo
https://tio.run/##fY7BDcAgDANXYSHkIXhX
fj
J@KggpSYN4nGzFwrixi1SwGA@RdPqfmq9Y6oHLbzfr8X/7bNwWmh986Np7tYu5f77hlyuXbQGeNwOx23aTIi8
Hello World!

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஌ࣝෆ଍ʹΑΔෳࡶ͞

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ΫΠζᶄ

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func doItNow() {
let result = doSomething1()
if result {
doSomething2()
} else {
doSomething3()
}
}
ԿΛ͍ͯ͠Δʁ
05
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03
02
01
00
00:

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func doItNow() {
let result = doSomething1()
if result {
doSomething2()
} else {
doSomething3()
}
}
ԿΛ͍ͯ͠Δʁ
͜Ε͚ͩͩͱΘ͔Βͳ͍

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৘ใෆ଍͔Β͘Δෳࡶ͞

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ΫΠζᶅ

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Կ͕ग़ྗ͞ΕΔʁ
let asciiRange = 32...126
var asciiValues: [UInt8] =
[105, 79, 83, 68, 67, 32, 74, 97, 112, 97, 110, 33]
var result = ""
while !asciiValues.isEmpty {
let first = asciiValues.first!
for value in asciiRange {
if value == first {
result.append(Character(UnicodeScalar(value)!))
asciiValues.removeFirst()
}
}
}
print(result)
05
04
03
02
01
00
00:

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Hello World!

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Ͱ͸ͳ͘…

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let asciiRange = 32...126
var asciiValues: [UInt8] =
[105, 79, 83, 68, 67, 32, 74, 97, 112, 97, 110, 33]
var result = ""
while !asciiValues.isEmpty {
let first = asciiValues.first!
for value in asciiRange {
if value == first {
result.append(Character(UnicodeScalar(value)!))
asciiValues.removeFirst()
}
}
}
print(result)
݁Ռ͸ʁ
iOSDC Japan!

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ॲཧೳྗෆ଍͔Β͘Δෳࡶ͞

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ॲཧೳྗෆ଍
৘ใෆ଍
஌ࣝෆ଍

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ೝ஌ϓϩηε͕
๦͛ΒΕΔ͜ͱͰൃੜ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηε

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ҟͳΔೝ஌ϓϩηε͕
ओͳݪҼ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ࡾͭͷೝ஌ϓϩηε

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
୹ظهԱ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηε > ୹ظهԱ

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୹ظهԱ
৘ใΛҰ࣌తʹอ࣋͢Δ
ྫ: ࠓಡΜͰ͍Δίʔυͷม਺ͷ໊લ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηε > ୹ظهԱ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ϫʔΩϯάϝϞϦ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηε > ϫʔΩϯάϝϞϦ

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৘ใΛҰ࣌తʹอ࣋͠
ͦͷ৘ใΛૢ࡞͢Δ
ϫʔΩϯάϝϞϦ

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৘ใΛҰ࣌తʹอ࣋͠
ͦͷ৘ใΛૢ࡞͢Δ
ϫʔΩϯάϝϞϦ
ྫ: ಄ͷதͰϧʔϓॲཧΛ࣮ߦ͢Δ
for i in 0...9 {

print(i * 2)

}
i = 0 → “0”
i = 1 → “2”
…

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
௕ظهԱ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηε > ௕ظهԱ

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௕ظهԱ
৘ใΛӬଓతʹอ࣋͢Δ
ྫ: ੲॻ͍ͨίʔυɺֶशͨ͠ϓϩάϛϯά஌ࣝ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηε > ௕ظهԱ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ࡾͭͷೝ஌ϓϩηε

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ೝ஌ϓϩηεͱ
ෆ଍ͷؔ܎
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηεͱෆ଍

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ೝ஌ϓϩηεͱෆ଍ͷؔ܎
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
৘ใෆ଍ ஌ࣝෆ଍
ॲཧೳྗෆ଍

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ॲཧೳྗෆ଍
୹ظهԱ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηεͱෆ଍ > ୹ظهԱ

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•৘ใෆ଍ͱؔ࿈͍ͯ͠Δ
୹ظهԱͱෆ଍ͷؔ܎

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•4~7ݸΛ໿30ඵอ࣋͢Δ

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•4~7ݸΛ໿30ඵอ࣋͢Δ = ݶք͕͋Δ

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•4~7ݸΛ໿30ඵอ࣋͢Δ = ݶք͕͋Δ
•ݶքʹୡ͢Δͱ…
৽͍͠৘ใ͕ೖΔͨͼʹݹ͍৘ใ͕ൈ͚Δ

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•4~7ݸΛ໿30ඵอ࣋͢Δ = ݶք͕͋Δ
৽͍͠৘ใ͕ೖΔͨͼʹݹ͍৘ใ͕ൈ͚Δ
͋Εʁ͖ͬ͞ͷͳΜ͚ͩͬʁ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ॲཧೳྗෆ଍
ϫʔΩϯάϝϞϦ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηεͱෆ଍ > ϫʔΩϯάϝϞϦ

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ϫʔΩϯάϝϞϦͱෆ଍ͷؔ܎
•ॲཧೳྗෆ଍ͱؔ࿈͍ͯ͠Δ

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•୹ظهԱΛར༻ = ݶք͕͋Δ

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•ඞཁͳ৘ใΛ๨Εͯ͠·͏
•͏͔ͬΓϛε͕૿͑Δ
•෺ࣄ͕֮͑ͮΒ͍

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•ݶքʹୡ͢Δ
•ඞཁͳ৘ใΛ๨Εͯ͠·͏
•͏͔ͬΓϛε͕૿͑Δ
•෺ࣄ͕֮͑ͮΒ͍
಄͕ճΒͳ͍…

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ॲཧೳྗෆ଍
௕ظهԱ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηεͱෆ଍ > ௕ظهԱ

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௕ظهԱͱෆ଍ͷؔ܎
•஌ࣝෆ଍ͱؔ࿈͍ͯ͠Δ

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•هԱʹͳ͍ͨΊ৘ใΛऔΓग़ͤͳ͍

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•هԱʹͳ͍ͨΊ৘ใΛऔΓग़ͤͳ͍
Կ΋Θ͔Βͳ͍͔Β
ͱΓ͋͑ͣௐ΂Α͏

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
ॲཧೳྗෆ଍
ೝ஌ϓϩηεͱෆ଍ͷؔ܎

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ೝ஌ϓϩηε͸࿈ܞ͢Δ
ͳͥෳࡶʹײ͡Δͷ͔ʁ > ೝ஌ϓϩηεͷ࿈ܞ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
❶
❶৽͍͠৘ใΛऔಘ͢Δ
୹ظهԱ⁵ϫʔΩϯάϝϞϦ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
❷
❶
❷ؔ࿈৘ใΛऔΓग़ͯ͠❶ͷ৘ใͱඥ͚ͮΔ
ϫʔΩϯάϝϞϦ⁵௕ظهԱ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
❷
❶
❸❶ͱ❷ͷ৘ใΛجʹ࡞ۀ͢Δ
❸
ίʔυͷཧղ͸ϫʔΩϯάϝϞϦ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
❷
❶
❸

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
σʔλ͸͋Γ·ͤΜ
❷ ❶
❸
Ұͭͷ໰୊͕ଞͷ໰୊Λى͜͢

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
σʔλ͸͋Γ·ͤΜ
σʔλ͍ͩ͘͞
❷ ❶
❸

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
σʔλ͸͋Γ·ͤΜ
σʔλ͍ͩ͘͞
❷ ❶
❸
༰ྔͷݶք
֮͑ͱ͔ͳͯ͘͸…

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ೝ஌ϓϩηε͕๦͛ΒΕΔͱ
ෳࡶʹײ͡Δ

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ෳࡶ͞΁ͷରࡦ
ෳࡶ͞΁ͷରࡦ

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ೝ஌ϓϩηε͕
๦͛ΒΕͳ͍Α͏ʹ͢Δ
ෳࡶ͞΁ͷରࡦ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
৘ใΛ಄ͷத͔Β֎ʹग़͢
ط੒֓೦ͷ্ॻ͖
ೝ஌తϦϑΝΫλϦϯά
௕ظهԱ΁ͷΠϯϓοτ
ೝ஌ϓϩηεʹԠͨ͡ରࡦ
ෳࡶ͞΁ͷରࡦ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
୹ظهԱ΁ͷରࡦ
ෳࡶ͞΁ͷରࡦ > ୹ظهԱ

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໰୊:
୹ظهԱͷ༰ྔͷݶք

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
୹ظهԱ΁ͷରࡦ
ෳࡶ͞΁ͷରࡦ > ୹ظهԱ > νϟϯΫԽ

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νϟϯΫ
ਓ͕ؒҰ౓ʹॲཧͰ͖Δ
৘ใͷ୯Ґ
ྫ: ΞϧϑΝϕοτCͱAͱT → CAT
09012345678 → ి࿩൪߸

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νϟϯΫԽ
ෳ਺ͷ৘ใΛҰͭͷνϟϯΫ
ͱͯ͠άϧʔϐϯά͢Δ͜ͱ
i O S
D C J
iOSDC
Japan
a p
a n

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•஌͍ͬͯΔจ๏(ྫ: for inɺif elseͳͲ)
•ؔ࿈ͨ͠ม਺ͷ૊Έ߹Θͤ(ྫ: ࠲ඪͷXYͳͲ)
•σβΠϯύλʔϯɺσʔλߏ଄
•վߦͰ෼͔Εͨ·ͱ·Γ
৘ใͷνϟϯΫԽ

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νϟϯΫͰ͖Δ͔νΣοΫ

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ԋश
ࠓ͔ΒݟΔίʔυΛ
30ඵͰ͍֮͑ͯͩ͘͞ɻ

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func slowSort(_ i: Int, _ j: Int,
_ numberList: inout [Int]) {
guard i < j else { return }
let m = (i+j)/2
slowSort(i, m, &numberList)
slowSort(m+1, j, &numberList)
if numberList[j] < numberList[m] {
let temp = numberList[j]
numberList[j] = numberList[m]
numberList[m] = temp
}
slowSort(i, j-1, &numberList)
}
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00
00:
ޮՌԻɿϙέοτα΢ϯυ – https://pocket-se.info/

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ऴྃ

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ԋश
Ͱ͸ɺࠓݟͨίʔυΛ
Կ΋ݟͣʹ
30ඵͰ࠶ݱ͍ͯͩ͘͠͞ɻ
(IDEͰ΋ࢴͰ΋ԿͰ΋OK)

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30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
00:
ޮՌԻɿϙέοτα΢ϯυ – https://pocket-se.info/

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ऴྃ

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ৼΓฦΓ
• ؆୯ʹਖ਼͘͠࠶ݱͰ͖ͨॴ͸Ͳ͜ʁ
• ࠶ݱͰ͸ͳͯ͘΋ਖ਼͍͠ॴ͸͋ͬͨʁ
• ·ͬͨ͘࠶ݱͰ͖ͳ͔ͬͨॴ͸͋ͬͨʁ
• ͦͷݪҼ͸Կʁ
• ݟ׳Εͳ͍ϓϩάϥϛϯά֓೦͸͋ͬͨʁ
• ݟ׳Εͳ͍ϏδωεྖҬͷ֓೦͸͋ͬͨʁ

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• ؆୯ʹਖ਼͘͠࠶ݱͰ͖ͨॴ͸Ͳ͜ʁ
• ࠶ݱͰ͸ͳͯ͘΋ਖ਼͍͠ॴ͸͋ͬͨʁ
• ·ͬͨ͘࠶ݱͰ͖ͳ͔ͬͨॴ͸͋ͬͨʁ
• ͦͷݪҼ͸Կʁ
• ݟ׳Εͳ͍ϓϩάϥϛϯά֓೦͸͋ͬͨʁ
• ݟ׳Εͳ͍ϏδωεྖҬͷ֓೦͸͋ͬͨʁ
ৼΓฦΓ

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୹ظهԱ΁ͷରࡦ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
୹ظهԱ΁ͷରࡦ
ෳࡶ͞΁ͷରࡦ > ୹ظهԱ > ௕ظهԱ΁ͷΠϯϓοτ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
❷
❶
❸

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•௕ظهԱ͔Β৘ใΛऔಘͰ͖Δ
→ ୹ظهԱ͕༰ྔͷݶքʹୡͮ͠Β͍
ෛՙΛ෼ࢄ͢Δ
୹ظهԱ
10t
௕ظهԱ
5t
୹ظهԱ
5t

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௕ظهԱ͕
৘ใΛอ࣋͢Δ࢓૊Έ

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εΩʔϚ

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εΩʔϚ
ࣅͨهԱಉ͕࢜ඥ෇͍ͮͨ
ωοτϫʔΫߏ଄
ݘ
̐଍าߦ
ϫϯͱ໐͘
ਓʹͳͭ͘
ೣ
ࣗ༝

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εΩʔϚ
ࣅͨهԱಉ͕࢜ඥ෇͍ͮͨ
ωοτϫʔΫߏ଄
ݘ
̐଍าߦ
ϫϯͱ໐͘
ਓʹͳͭ͘
ೣ
ࣗ༝
ݘνϟϯΫ
ೣνϟϯΫ

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݀Λ۷Δͷ͕޷͖
ݘ
̐଍าߦ
ϫϯͱ໐͘
ਓʹͳͭ͘
εΩʔϚ

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௕ظهԱΛ׆༻͢Δίπ
•ఆظతʹ৘ใʹ৮ΕΔ
•ෳ਺ͷײ֮Λ࢖͏(ݟΔɺௌ͘ɺ৮Δ…)
•ੵۃతͳνϟϯΫԽ(ϦετԽɺݟग़͠෇͚)
•ͲΜͲΜਂ۷Γ͢Δ
ෳࡶ͞΁ͷରࡦ > ୹ظهԱ > ௕ظهԱ΁ͷΠϯϓοτ > ௕ظهԱΛ׆༻͢Δίπ

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•ෳ਺ͷײ֮Λ࢖͏(ݟΔɺௌ͘ɺಡΉ)
•ੵۃతʹνϟϯΫԽ͢Δ(ϦετԽɺݟग़͠෇͚)
ఆظతʹ৘ใʹ৮ΕΔ

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௕ظهԱ
৘ใΛӬଓతʹอ࣋͢Δ…
͕ɺ๨ΕΔ͜ͱ΋͋Δ

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๨٫ۂઢ
֮
͑
ͯ
͍
Δ
ׂ
߹
(%)
ܦա࣌ؒ

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1ճ
2ճ
3ճ
4ճ
๨٫ۂઢ
֮
͑
ͯ
͍
Δ
ׂ
߹
(%)
ܦա࣌ؒ

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܁Γฦͯ͠ఆணͤ͞Δ
௕ظهԱ
৘ใ

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ෳ਺ͷײ֮Λ࢖͏
•ෳ਺ͷײ֮Λ࢖͏(ݟΔɺௌ͘ɺಡΉ)
•ੵۃతʹνϟϯΫԽ͢Δ(ϦετԽɺݟग़͠෇͚)
•ΠϝʔδԽ΍ղऍΛͯ͠طଘͷهԱͱؔ࿈෇͚Δ

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ײ֮هԱ

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ײ֮هԱ
ײ֮ث׭͔ΒૹΒΕ͖ͯͨ
৘ใΛॠؒతʹอ࣋͢Δ
👀 👂 ✍ 👃 👄

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֎෦৘ใˠײ֮هԱ
୹ظهԱ
ײ֮هԱ
❶
❶ ֎෦͔Βͷ৘ใΛ0~2ඵอ࣋͢Δ
👀

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ײ֮هԱˠ୹ظهԱ
ײ֮هԱ ୹ظهԱ
❶ ֎෦͔Βͷ৘ใΛ0~2ඵอ࣋͢Δ
❷
❷஫ҙΛ޲͚͍ͯΔ৘ใͷΈૹΒΕΔ
❶
👀

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ײ֮هԱʼ୹ظهԱ
ײ֮هԱ͸୹ظهԱҎ্ͷ
৘ใΛอ͍࣋ͯ͠Δ
ײ֮هԱ ୹ظهԱ
❶ ֎෦͔Βͷ৘ใΛ0~2ඵอ࣋͢Δ
❷
❷஫ҙΛ޲͚͍ͯΔ৘ใͷΈૹΒΕΔ
❶
👀

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֎෦৘ใˠײ֮هԱˠ୹ظهԱ
ײ֮هԱ ୹ظهԱ
❶ ֎෦͔ΒೖΔ৘ใͷස౓͕૿͑Δ
❷୹ظهԱʹૹΒΕΔ৘ใͷස౓͕૿͑Δ
👀
👂
✍
❶ ❷

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୹ظهԱˠ௕ظهԱ
ײ֮هԱ ୹ظهԱ
❶ ֎෦͔ΒೖΔ৘ใͷස౓͕૿͑Δ
❷୹ظهԱʹૹΒΕΔ৘ใͷස౓͕૿͑Δ
👀
👂
✍
❸ ௕ظهԱ΁৘ใ͕܁Γฦ͠ೖΔ
௕ظهԱ
ϫʔΩϯάϝϞϦ
❸
❶ ❷

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͜Ε͚ͩͰ͸଍Γͳ͍

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௕ظهԱͷೋͭͷڧ౓
•อଘڧ౓
ͲΕ͚ͩ௕͘هԱͰ͖Δ͔
•ݕࡧڧ౓
ͲΕ͚ͩૉૣ͘ࢥ͍ग़ͤΔ͔

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อଘڧ౓
•อଘڧ౓
•ݕࡧڧ౓
ͲΕ͚ͩ଎͘ࢥ͍ग़ͤΔ͔

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ݕࡧڧ౓
•อଘڧ౓
•ݕࡧڧ౓
ͲΕ͚ͩૉૣ͘ࢥ͍ग़ͤΔ͔

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܁Γฦ͢ͱอଘڧ౓͸্͕Δ
อଘڧ౓

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ͨͩ܁Γฦͯ͠΋ݕࡧڧ౓͸্͕Βͳ͍
ݕࡧڧ౓

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อଘڧ౓͸ߴ͍͕ɺݕࡧڧ౓͸௿͍
ݕࡧڧ౓
อଘڧ౓

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อଘڧ౓͸ߴ͍͕ɺݕࡧڧ౓͸௿͍
ݕࡧڧ౓
อଘڧ౓
͋ΕɺͳΜ͚ͩͬʁ
ͦ͏͋ΕͩΑ͋Εɻ
͑ʔͬͱ…ࢥ͍ग़ͤͳ͍…
Ͱ΋ઈର஌ͬͯΔΜͩΑɻ

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ࢥ͍ग़͢·Ͱͷ࣌ؒ΋େࣄ

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ݕࡧڧ౓Λ্͛Δʹ͸
ҙࣝతͳ࿅श͕ඞཁ

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௕ظهԱΛ׆༻͢Δίπ

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ੵۃతͳνϟϯΫԽ

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•ϦετԽɺݟग़͠෇͚
ੵۃతͳνϟϯΫԽ
Swift Concurrency
- async/await
- Structured Concurrency
- actor
return registeredIDs
.insert(id)
.inserted
IDొ࿥(ॏෳ͸NG)

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ͲΜͲΜਂ۷Γ͢Δ

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ͲΜͲΜਂ۷Γ͢Δ
͜͜Ͱݴ͍͍ͨͷ͸
ͭ·Γ͜͏͍͏͜ͱͩͳɻ
͜͜Ͱ͸
͜ͷٕज़͕࢖ΘΕ͍ͯΔͳɻ

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εΩʔϚͷڧԽ
((
((
ݕࡧڧ౓

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Ұ౓ཧղͨ͠ΒDone
👩💻
👨💻 Α͠ɺཧղͨ͠ɻDone!

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ωοτͰݕࡧͯ͠Done
👩💻
👨💻 … Done!

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ҙࣝతͳ࿅शΛ܁Γฦ͢
อଘڧ౓
ݕࡧڧ౓

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୹ظهԱ΁ͷରࡦ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ೝ஌తϦϑΝΫλΫϦϯά

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ϫʔΩϯάϝϞϦ΁ͷରࡦ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ϫʔΩϯάϝϞϦ

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໰୊:
ϫʔΩϯάϝϞϦͷݶք

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ೝ஌ෛՙ
ϫʔΩϯάϝϞϦͰ
৘ใΛॲཧ͢Δࡍʹ͔͔Δෛՙ

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ࡾͭͷλΠϓͷೝ஌ෛՙ
ෳࡶ͞΁ͷରࡦ > ϫʔΩϯάϝϞϦ > ࡾͭͷλΠϓͷೝ஌ෛՙ

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•՝୊಺ࡏੑෛՙ:
໰୊ຊདྷͷ೉͠͞ʹΑΔෛՙ(ྫ: ೉͍͠਺ֶͷ໰୊)

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•՝୊֎ࡏੑෛՙ:
໰୊ͱແؔ܎ͳෛՙ(ྫ: ಛఆͷ࣮૷ͷෳࡶ͞ͳͲ)

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•ֶशؔ࿈ෛՙ:
௕ظهԱʹ৘ใΛอ࣋͢Δࡍʹൃੜ͢Δෛՙ

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•ֶशؔ࿈ෛՙ:
ֶशؔ࿈ෛՙ͸ඞཁෆՄܽ
ඞཁෆՄܽ

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ֶशͰ͖ͳ͍
💦
՝୊಺ࡏੑෛՙ
՝୊֎ࡏੑෛՙ
ֶशؔ࿈ෛՙ

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•ֶशؔ࿈ෛՙ:
࢒Γೋ͕ͭ໰୊

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໰୊ͦͷ΋ͷͷ೉͠͞ʹΑΔෛՙ(ྫ: ߴ౓ͳ਺ֶͳͲ)
໰୊ͱແؔ܎ͳෛՙ(ྫ: ಛఆͷ࣮૷ʹΑΔෳࡶ͞ͳͲ)
•ֶशؔ࿈ෛՙ(ద੾ͳෛՙ):
௕ظهԱʹ৘ใΛอଘ͢Δͷʹඞཁͳෛՙ
ಛʹ
͜ͷෛՙΛݮΒ͢

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ϫʔΩϯάϝϞϦ > ༨ܭͳೝ஌ෛՙΛݮΒ͢ > ೝ஌తϦϑΝΫλϦϯά

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•ಈ࡞Λม͑ͣʹࣗ෼ͷಡΈ΍͍͢ίʔυʹॻ͖׵͑Δ
ྫ: ϝιου΍ม਺ͷΠϯϥΠϯԽ
map → for in ϧʔϓ

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•ಈ࡞Λม͑ͣʹࣗ෼ͷಡΈ΍͍͢ίʔυʹॻ͖׵͑Δ
•ཧղͷͨΊ͚ͩͳͷͰผʹಈ͔ͳͯ͘΋Α͍

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•ֶशؔ࿈ෛՙ:
໰୊ͦͷ΋ͷ͕೉͍͠
ෳࡶ͞΁ͷରࡦ > ϫʔΩϯάϝϞϦ > ໰୊ࣗମ͕೉͍͠৔߹

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•ৗʹෳ਺ͷঢ়ଶΛهԱ͠ͳ͚Ε͹ͳΒͳ͍ॲཧ
→ ϫʔΩϯάϝϞϦͷݶքʹୡ͠΍͍͢
ྫ: ϧʔϓॲཧͷதͰෳ਺ͷঢ়ଶͷมߋΛ௥͏
ෳ਺ͷঢ়ଶΛಉ࣌ʹѻ͏

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•໰୊ࣗମΛม͑Δ͜ͱ͸೉͍͠
Ͳ͏͢Δʁ

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•໰୊ࣗମΛม͑Δ͜ͱ͸೉͍͠
→ ͜ͷ೉͠͞Λ෼ࢄ͢Δํ๏Λߟ͑Δ
໰୊ͷ೉͠͞Λ෼ࢄ͢Δ

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୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ϫʔΩϯάϝϞϦ > ໰୊ࣗମ͕೉͍͠৔߹ > ৘ใΛ಄ͷத͔Β֎ʹग़͢

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•ม਺ͷมԽΛ௥͍ͬͯ͘
ঢ়ଶભҠਤ
func fibonacci(_ x: Int) -> Int {
if x < 2 { return x }
var first: Int = 0
var second: Int = 1
for _ in 0...(x - 2) {
let temp = second
second = first + second
first = temp
}
return second
}
x
f
irst second temp
init 4 0 1
loop1 2 1 1
loop2 1 3 1
loop3 3 4 3
ෳࡶ͞΁ͷରࡦ > ϫʔΩϯάϝϞϦ > ໰୊ࣗମ͕೉͍͠৔߹ > ৘ใΛ಄ͷத͔Β֎ʹग़͢

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ϫʔΩϯάϝϞϦ΁ͷରࡦ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖

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௕ظهԱ΁ͷରࡦ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ௕ظهԱ

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໰୊:
௕ظهԱͷޡೝࣝ
ෳࡶ͞΁ͷରࡦ > ௕ظهԱ > ޡೝࣝ໰୊

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•ؒҧ͍ͬͯΔ͚Ͳਖ਼͍͠ͱ֬৴͍ͯ͠Δঢ়ଶ
→ طଘͷεΩʔϚ͔ΒࣅͯඇͳΔ৘ใΛऔΓग़͢
ޡೝࣝ

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•ؒҧ͍ͬͯΔ͚Ͳਖ਼͍͠ͱ֬৴͍ͯ͠Δঢ়ଶ
→ طଘͷεΩʔϚ͔ΒࣅͯඇͳΔ৘ใΛऔΓग़͢
•ಛʹೝ஌ෛՙ͕ߴ͍ͱى͜Γ΍͍͢
ྫ: ৽͍͠ϓϩδΣΫτʹࢀՃ
৽͍͠ϓϩάϥϛϯάݴޠΛֶͿ
ޡೝࣝ

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ؾ෇͖·͔ͨ͠ʁ

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͋Δݴ༿Λ
ؒҧ͍͑ͯ·͢

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• ಈ࡞Λมߋͤͣɺࣗ෼͕ಡΈ΍͍͢ίʔυʹॻ͖׵͑Δ͜ͱ
• ཧղͷͨΊ͚ͩͳͷͰผʹಈ͔ͳͯ͘΋Α͍

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• ಈ࡞Λมߋͤͣɺࣗ෼͕ಡΈ΍͍͢ίʔυʹॻ͖׵͑Δ͜ͱ
• ཧղͷͨΊ͚ͩͳͷͰผʹಈ͔ͳͯ͘΋Α͍
✖︎

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ޡೝ͕ࣝىͦ͜͠͏ͳ໰୊
func increment(
_ value: Int
) -> Int {
value+1
}
func increment(
_ value: Double
) -> Double {
value+0.1
}

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func increment(
_ value: Int
) -> Int {
value+1
}

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var currentValue = 1.0
if 2 != increment(currentValue) {
assertionFailure(“ͦΜͳόΧͳ…”)
}
func increment(
_ value: Int
) -> Int {
value+1
}
func increment(
_ value: Double
) -> Double {
value+0.1
}
1 ͔ͳʁ

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ط੒֓೦ͷ্ॻ͖
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ௕ظهԱ > ޡೝࣝରࡦ > ط੒֓೦ͷ্ॻ͖

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•৽͍͠ೝࣝΛҙࣝతʹ࢖ͬͯ௕ظهԱʹ͋Δطଘͷೝ
ࣝΛ཈͑Δ
Ξϯϥʔχϯά

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ଞͷࢹ఺͔Βࢥ͍ࠐΈΛ֬ೝ͢Δ
•ίʔυϨϏϡʔ
•ϖΞϓϩάϥϛϯά
•(ҰਓͳΒ)ϕΞϓϩάϥϛϯά
•ςετΛॻ͘

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ೝ஌ϓϩηεʹԠͨ͡ରࡦ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ೝ஌ϓϩηεʹԠͨ͡ରࡦ

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ରࡦͷ૬৐ޮՌ
୹ظهԱ
ϫʔΩϯά
ϝϞϦ
௕ظهԱ
νϟϯΫԽ
ط੒֓೦ͷ্ॻ͖
ෳࡶ͞΁ͷରࡦ > ೝ஌ϓϩηεʹԠͨ͡ରࡦ > ૬৐ޮՌ

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ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍
ίʔυ಺༰ͷཧղ

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ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍
ίʔυ಺༰ͷཧղ
΋͏Ұาઌͷ໰୊
→

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໰୊:
ίʔυͷҙਤ͕͔ͭΊͳ͍
ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ໰୊

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ίʔυͷҙਤ
•ίʔυશମ͔Βݟͨ໾ׂ΍ɺଞͷίʔυͱͷؔ܎

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💡
ҙਤ͕͔ͭΊͳ͍ঢ়ଶ

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💡 ʁ
ҙਤ͕͔ͭΊͳ͍ঢ়ଶ

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•όάमਖ਼ɺػೳ௥ՃΛ͢ΔՕॴ͕Θ͔Βͳ͍
ҙਤ͕͔ͭΊͳ͍ฐ֐

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→ ίʔυΛ͋ͪͪ͜୳͠ճΔ

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→ ίʔυΛ͋ͪͪ͜୳͠ճΔ
→ ୹ظهԱͷ༰ྔͷݶքʹୡ͢Δ

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•࠷ॳʹίʔυͷΠϝʔδΛ࡞Δ
•఺͔ΒཧղΛ޿͍͛ͯ͘
•ม਺ͷ໾ׂΛߟ͑Δ
•จষಡղज़ΛԠ༻͢Δ
ίʔυͷҙਤΛ͔ͭΉରࡦ
ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ

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ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ > ࠷ॳʹίʔυͷΠϝʔδΛ࡞Δ

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·ͣಡΜͰ಺༰Λࢥ͍ग़͢
•ର৅ͷίʔυશମΛಡΈɺ௚ޙʹ಺༰Λࢥ͍ग़͢

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ײ֮هԱͷ৘ใ͔ΒΠϝʔδΛ࡞Δ
ײ֮هԱ
👀

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୹ظهԱ
ײ֮هԱ
👀 ϫʔΩϯά
ϝϞϦ

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୹ظهԱ
ײ֮هԱ
👀 ϫʔΩϯά
ϝϞϦ
௕ظهԱ

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•ࣗવݴޠͷจষͷಡΈํΛࢀߟʹ͢Δ
ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ > ఺͔ΒཧղΛ޿͍͛ͯ͘

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఺ͱ͸
ೖΓޱΛܾΊΔ
ྫ: ΞϓϦͷΤϯτϦʔϙΠϯτɺΤϥʔൃੜߦ
ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ > ఺͔ΒཧղΛ޿͍͛ͯ͘

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ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ > ม਺ͷ໾ׂΛߟ͑Δ

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ม਺ͷ໾ׂ
•ͦΕͧΕอ࣋͢Δ৘ใͷ໨త͕ҧ͏
→ ม਺ͷ໾ׂΛཧղ͢ΔͱɺͲ͏͍͏ίʔυͳͷ͔
͕ݟ͑ͯ͘Δ

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func max(in numbers: [Int]) -> Int? {
guard let firstNumber = numbers.first else {
return nil
}
var maxNumber = firstNumber
for number in numbers {
if number >= maxNumber {
maxNumber = number
}
}
return maxNumber
}
ෳ਺ͷཁૉΛ֨ೲ
ෳ਺ͷཁૉΛ֨ೲ͢Δ΋ͷ
Fundamentals of Programming: The Role of Variables

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return nil
}
maxNumber = number
}
}
return maxNumber
}
࠷΋ॏཁͳ஋
࠷΋ॏཁͳ஋Λอ࣋͢Δ΋ͷ

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return nil
}
maxNumber = number
}
}
return maxNumber
}
௚ۙͷ஋Λอ࣋͢Δ
࠷΋௚ۙͷ஋Λอ࣋͢Δ΋ͷ

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return nil
}
maxNumber = number
}
}
return maxNumber
}
ͭ·Γ
഑ྻͷ࠷େ஋Λ
ฦ͍ͯ͠Δͷ͔ͳʁ

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return nil
}
maxNumber = number
}
}
return maxNumber
}
ม਺ͷ໾ׂΛߟ͑Δ

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ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ > จষಡղज़ΛԠ༻͢Δ

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•ࣗવݴޠͷจষͱϓϩάϥϛϯάݴޠͷίʔυΛಡΉ
࣌ʹ࢖ΘΕΔ೴ͷ෦Ґ͸ࣅ͍ͯΔ
จষಡղͱίʔυͷಡΈํ

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•จষಡղज़͸ίʔυͷಡΈํʹ؆୯ʹԠ༻Ͱ͖Δ
จষಡղज़ΛԠ༻Ͱ͖Δʁ

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•จষಡղज़ΛίʔυͷಡΈํʹԠ༻Ͱ͖Δ
← ֶߍͰशͬͨ + ຖ೔࣮ફ͍ͯ͠Δ
ɹྫ: ಡॻɺχϡʔε
จষಡղज़ΛԠ༻Ͱ͖Δʁ

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จষಡղͷࣣͭͷश׳
https://www.researchgate.net/publication/27474121_The_Seven_Habits_of_Highly_E
ff
ective_Readers
จষಡղͷࣣͭͷश׳ ίʔυΛಡΉςΫχοΫ
༧උ஌ࣝͷ׆ੑԽ શମΛͬ͟ͱಡΉ
த৺ͱͳΔ෺ޠͷ୳ࡧ ॏཁͩͱࢥ͏ϙΠϯτΛϦετΞοϓ͢Δ
ਪ࿦ ࡞ΒΕͨഎܠ΍࡞ऀͷҙਤΛߟ͑Δ
ࢹ֮Խ ঢ়ଶભҠਤΛඳ͍ͨΓɺґଘؔ܎ΛઢͰ݁Ϳ
طଘͷ஌ࣝͱͷϦϯΫ աڈʹࣅͨΑ͏ͳίʔυΛݟͨ͜ͱͳ͍͔ࢥ͍ग़͢
ࣗ໰ࣗ౴ ٙ໰ʹࢥͬͨ͜ͱΛϦετΞοϓͯ͠ճ౴͢Δ
಺༰ͷཁ໿ ιʔευΩϡϝϯτΛॻ͘

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ෳࡶ͞΁ͷରࡦ > ίʔυͷҙਤ͕͔ͭΊͳ͍ > ରࡦ

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ೝ஌ϓϩηεશൠʹର͢Δ
൚༻తͳରࡦ
ෳࡶ͞΁ͷରࡦ > ൚༻తͳରࡦ

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•ूதͰ͖Δ؀ڥͮ͘Γ
•ׂΓࠐΈΛݮΒ͢
•ׂΓࠐΈ͔Β෮ؼ͠΍͘͢͢Δ
൚༻తͳରࡦ

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൚༻తͳରࡦ
ෳࡶ͞΁ͷରࡦ > ൚༻తͳରࡦ > ूதͰ͖Δ؀ڥͮ͘Γ

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•ײ֮هԱ͸ແҙࣝʹ৭ʑͱهԱ͍ͯ͠Δ
ײ֮هԱͷಛੑ
👀
👂
ײ֮هԱ

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•༨ܭͳ৘ใ͕͋Δͱ೴ʹ༨ܭͳ৘ใ͕ೖͬͯ͘Δ
༨ܭͳ৘ใˠෛՙ
👀
👂
ײ֮هԱ
💦

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•༨ܭͳ৘ใ͕͋Δͱ೴ʹ༨ܭͳ৘ใ͕ೖͬͯ͘Δ
→ ͳΔ΂͘༨ܭͳ৘ใ͕ೖΒͳ͍Α͏ʹ͢Δ
༨ܭͳ৘ใΛःஅ͢Δ
✖︎
✖︎
✖︎
👀
👂
ײ֮هԱ

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•૽ԻΛආ͚Δ
•λεΫΛ2ͭҎ্ಉ࣌ʹߦΘͳ͍
ྫ: slackνΣοΫ+ίʔσΟϯά
•݈߁ʹؾΛ෇͚Δ(ਭ຾ɺٳܜɺӡಈ)
༨ܭͳ৘ใΛೖΕͳ͍ͨΊʹ
৘ใաଟʹ͝༻৺ʂੜ࢈ੑͷ௿ԼΛট͘ʮೝ஌తաෛՙʯ΁ͷରॲ๏ ᴷᴷ ւͷ޲͜͏͔ΒΦϐχΦϯ ͦͷ70

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൚༻తͳରࡦ
ෳࡶ͞΁ͷରࡦ > ൚༻తͳରࡦ >ׂΓࠐΈΛݮΒ͢

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•ͨ͘͞Μ͋Δ
Ұ౓ͷׂΓࠐΈͰඅ΍࣌ؒ͢͸ฏۉ15~20෼
2࣌ؒͷίʔσΟϯάΛअຐ͞Εͳ͍ͷ͸1ճ/೔ͷΈ
࡞ۀͷதஅ͔Βίʔυͷฤूʹ໭Δͷʹ໿25෼
ׂΓࠐΈʹؔ͢Δݚڀ݁Ռ

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•Ұ౓ׂΓࠐΈ͕͋Δͱɺݩͷ࡞ۀʹ͙͢໭Εͳ͍
ׂΓࠐΈͷσϝϦοτ
λεΫ λεΫ
ผ࡞ۀ

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•Ұ౓ׂΓࠐΈ͕͋Δͱɺݩͷ࡞ۀʹ͙͢໭Εͳ͍
→ ݩͷ࡞ۀʹඞཁͳ৘ใΛࢥ͍ग़͢࿑ྗ͕ඞཁ
→ ಉ͡࡞ۀΛ܁Γฦ͢
ׂΓࠐΈͷσϝϦοτ
λεΫ λεΫ
ผ࡞ۀ

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•νϟοτͷ௨஌ΛҰఆظؒΦϑʹ͓ͯ͘͠
•ΧϨϯμʔʹूதλΠϜΛ༧໿͓ͯ͘͠
•ҰਓʹͳΕΔ৔ॴΛݟ͚ͭΔ
ׂΓࠐΈΛݮΒͨ͢Ίʹ
✖︎

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൚༻తͳରࡦ
ෳࡶ͞΁ͷରࡦ > ൚༻తͳରࡦ >ׂΓࠐΈ͔Β෮ؼ͠΍͘͢͢Δ

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•ͬ͘͟Γͱͨ͠ίʔυͷΠϝʔδΛ಄ͷ֎ʹه࿥͓ͯ͘͠
•ίϯύΠϧΤϥʔঢ়ଶʹ͓ͯ͘͠
•TODOίϝϯτΛ࢒͢(ॻ͍ͨ΋ͷΛ๨Ε͕ͪͳͷͰ஫ҙ)
•େ͖ͳ໰୊͸ࡉ͔͘෼͚ɺࢥ͍ग़͞ͳ͚Ε͹ͳΒͳ͍ྔ
ΛݮΒ͢
ԿΛ͍͔ͯͨ͠ࢥ͍ग़ͤΔ࢓૊Έ
ෳࡶ͞΁ͷରࡦ > ൚༻తͳରࡦ >ׂΓࠐΈ͔Β෮ؼ͠΍͘͢͢Δ
💡

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൚༻తͳରࡦ

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ෳࡶ͞΁ͷରࡦ
ෳࡶ͞΁ͷରࡦ

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೴ͷঢ়ଶΛ஌Γ
ෛՙΛܰݮ͢Δ
ෳࡶ͞΁ͷରࡦ

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ίʔυΛಡΉςΫχοΫΛ
ίʔυͷॻ͖ํʹ΋׆༻͢Δ

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ෳࡶͳίʔυΛಡΈ΍͘͢͢Δ

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ಡΈ΍͍͢ίʔυΛॻ͘

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ಡΈ΍͍͢ίʔυΛॻ͘
ίʔυΛॻ͘ࡍʹ΋
ಉ͡ςΫχοΫΛ׆༻Ͱ͖Δ

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ಡΈ΍͍͢ίʔυΛॻ͘ʹ͸ʁ
•ಡΈखʹ༨ܭͳෛՙΛ͔͚ͳ͍
•೴ͷ࢓૊ΈΛར༻͢Δ
•ޡղͮ͠Β͘͢Δ
ίʔυͷॻ͖ํʹ΋׆༻͢Δ > ಡΈ΍͍͢ίʔυΛॻ͘ʹ͸ʁ
⚪︎
✖︎
✖︎

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•ޡղͮ͠Β͘͢Δ
ίʔυͷॻ͖ํʹ΋׆༻͢Δ > ಡΈ΍͍͢ίʔυΛॻ͘ʹ͸ʁ > ಡΈखʹ༨ܭͳෛՙΛ͔͚ͳ͍
⚪︎
✖︎
✖︎

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໰୊ͦͷ΋ͷͷ೉͠͞ʹΑΔෛՙ(ྫ: ߴ౓ͳ਺ֶͳͲ)
໰୊ͱແؔ܎ͳෛՙ(ྫ: ಛఆͷ࣮૷ʹΑΔෳࡶ͞ͳͲ)
•ֶशؔ࿈ෛՙ:
௕ظهԱʹ৘ใΛอଘ͢Δͷʹඞཁͳෛՙ
༨ܭͳෛՙ

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•ίʔυεϝϧ(※)Λ௥Ճ͠ͳ͍
ྫ: ௕͗͢ΔύϥϝʔλϦετɺॏෳͨ͠ίʔυ
༨ܭͳෛՙͱͳΔ΋ͷ
※ όάͰ͸ͳ͍͕ϝϯςφϯε΍֦ுΛࠔ೉ʹ͢ΔՄೳੑΛࣔ͢ಛఆͷύλʔϯ

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•ίʔυεϝϧ(※)Λ௥Ճ͠ͳ͍
ྫ: ௕͗͢ΔύϥϝʔλϦετɺॏෳͨ͠ίʔυ
•ಛघͳγϯλοΫεΛ࢖Θͳ͍
ྫ: ࣗ෼͚͔ͩ͠Θ͔Βͳ͍ΧελϜΦϖϨʔλ
༨ܭͳෛՙͱͳΔ΋ͷ
※ όάͰ͸ͳ͍͕ϝϯςφϯε΍֦ுΛࠔ೉ʹ͢ΔՄೳੑΛࣔ͢ಛఆͷύλʔϯ
if aᵃ|˜˜|ᵏb { … }

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•ޡղͮ͠Β͘͢Δ
ίʔυͷॻ͖ํʹ΋׆༻͢Δ > ಡΈ΍͍͢ίʔυΛॻ͘ʹ͸ʁ > ೴ͷ࢓૊ΈΛར༻͢Δ
⚪︎
✖︎
✖︎

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•νϟϯΫԽ͠΍͍͢ߏ଄ʹ͢Δ
•௕ظهԱ͔Β৘ใΛऔΓग़͠΍͘͢͢Δ
هԱɺݕࡧ͠΍͘͢͢Δ

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•Ұ؏໋໊ͨ͠ن໿
ྫ: ϓϩδΣΫτͷن໿ɺݴޠͷ׳ྫͳͲ
•Ұ؏ͨ͠ίʔσΟϯάελΠϧ
ྫ: DIͷํ๏ɺUIύλʔϯ(MVVM, MVP…)
•σβΠϯύλʔϯ(σίϨʔλɺΦϒβʔό…)
•ࣗಈπʔϧ(formatterɺlint)
Ұ؏ੑΛҙࣝ͢Δ

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•ޡ༻ͮ͠Β͘͢Δ
ίʔυͷॻ͖ํʹ΋׆༻͢Δ > ಡΈ΍͍͢ίʔυΛॻ͘ʹ͸ʁ > ޡ༻ͮ͠Β͘͢Δ
⚪︎
✖︎
✖︎

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ਓ͸צҧ͍Λͯ͠͠·͏
·ͣೝ͓ࣝͯ͘͠΂͖͜ͱ

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צҧ͍ͷ࢓૊Έ
աڈͷܦݧ
ࢥߟͷบ
ࣄ࣮ ࣄ࣮ͱ͸ҧ͏
ղऍ

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ૣ͘ؾ͚ͮΔΑ͏ʹ͢Δ
աڈͷܦݧ
ࢥߟͷบ
ࣄ࣮ ࣄ࣮ͱ͸ҧ͏
ղऍ
͋Εʁ
Կ͔ҧ͏ʁ

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•ίϯύΠϥͷྗΛआΓΔ
ྫ: جຊܕˠ໌ࣔతͳܕɺෆཁͳΦϓγϣφϧΛආ͚Δ
•ςετΛॻ͘
•ݟ͑Δͱ͜ΖʹυΩϡϝϯτΛ௥Ճ͢Δ
ૣ͘ؾͮͨ͘Ίͷ࢓૊Έ

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•ޡղͮ͠Β͘͢Δ
⚪︎
✖︎
✖︎

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•ࣗ෼͕ಡΈ΍͍͢ͱࢥͬͯ΋ଞͷਓʹͱͬͯ͸ͦ͏Ͱ
͸ͳ͍͔΋͠Εͳ͍
ಡΈ΍͢͞͸ਓʹΑΔ
ʁ 💡

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•ࣗ෼͕ಡΈ΍͍͢ͱࢥͬͯ΋ଞͷਓʹͱͬͯ͸ͦ͏Ͱ
͸ͳ͍͔΋͠Εͳ͍
•νʔϜͰ։ൃ͍ͯ͠Δࡍ͸ڞ௨ͷཧղͱ߹ҙΛಘΔ͜
ͱ͕େࣄ
पΓͷཧղͱ߹ҙΛಘΔ

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·ͱΊ
·ͱΊ

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•ෳࡶ͞͸ೝ஌ϓϩηε͕๦͛ΒΕΔ͜ͱͰى͖Δ
ࠓ೔࿩ͨ͜͠ͱ
·ͱΊ

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•೴ͷঢ়ଶΛ஌ΓෛՙΛܰݮ͢Δ
ࠓ೔࿩ͨ͜͠ͱ
·ͱΊ

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•೴ͷঢ়ଶΛ஌ΓෛՙΛܰݮ͢Δ
•ҙࣝతͳ࿅शΛ܁Γฦͯ͠਎ʹ෇͚Δ
ࠓ೔࿩ͨ͜͠ͱ
·ͱΊ

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•͍ͭ΋ઈର͏·͍͘͘ͳΜͯ͜ͱ͸ͳ͍
ͦΕͰ΋
·ͱΊ

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•ඞͣ͏·͍͘͘ͳΜͯ͜ͱ͸ͳ͍
ͦͯ͠
😔
🪫
·ͱΊ

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·ͱΊ
人
間

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͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
ϑΟʔυόοΫ͓ئ͍͠·͢ɻ
͓͠·͍

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ࢀߟࢿྉ
• ϓϩάϥϚʔ೴
～
༏ΕͨϓϩάϥϚʔʹͳΔͨΊͷೝ஌Պֶʹجͮ͘Ξϓϩʔν
• Hacking Your Head : Managing Information Overload (extended)
• Microservices: Software that Fits in Your Head
• Demine your codebase in 30min with Exploratory Refactoring
• The Cognitive Load Theory in Software Development
• The Seven Habits of Highly E
ff
ective Readers
• Measuring Program Comprehension: A Large-Scale Field Study with Professionals
• νϟϯΫԽνΣοΫͷιʔεݩ
• ϫʔΩϯάϝϞϦͱνϟϯΫʹؔ͢Δઆ໌
• ৘ใࣾձͷ৽ͨͳSOSɻ৘ใաଟγϯυϩʔϜͱ͸
ࢀߟࢿྉ

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複雑さに立ち向かうためのコードリーディング入門

複雑さに立ち向かうためのコードリーディング入門

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