Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Head First Golang Image Package
Search
Sponsored
·
Your Podcast. Everywhere. Effortlessly.
Share. Educate. Inspire. Entertain. You do you. We'll handle the rest.
→
Seiji Takahashi
November 13, 2018
Programming
2
10k
Head First Golang Image Package
Talk session @ golang.tokyo #19
Seiji Takahashi
November 13, 2018
Tweet
Share
More Decks by Seiji Takahashi
See All by Seiji Takahashi
権限と承認 〜ユーザー信頼性に繋がる管理画面の根幹について〜
timakin
0
760
Go Backends for frontends with GraphQL and gRPC
timakin
6
4.2k
Design Pattern for Image and Text Composition in Go
timakin
5
6.8k
Golang API Testing the HARD way
timakin
13
6.9k
React Native Beyond Prototype
timakin
2
1.7k
Performance Optimization on Google AppEngine
timakin
5
6.5k
testcache.pdf
timakin
1
200
How Go cache
timakin
1
120
How Go cache tests
timakin
1
3.3k
Other Decks in Programming
See All in Programming
文字コードの話
qnighy
43
16k
モジュラモノリスにおける境界をGoのinternalパッケージで守る
magavel
0
3.4k
Ruby x Terminal
a_matsuda
5
560
AI活用のコスパを最大化する方法
ochtum
0
120
PJのドキュメントを全部Git管理にしたら、一番喜んだのはAIだった
nanaism
0
230
Oxlint JS plugins
kazupon
1
1.2k
RubyとGoでゼロから作る証券システム: 高信頼性が求められるシステムのコードの外側にある設計と運用のリアル
free_world21
0
170
CSC307 Lecture 10
javiergs
PRO
1
690
要求定義・仕様記述・設計・検証の手引き - 理論から学ぶ明確で統一された成果物定義
orgachem
PRO
13
8.2k
Beyond the Basics: Signal Forms
manfredsteyer
PRO
0
110
AWS Infrastructure as Code の新機能 2025 総まとめ 〜SA 4人による怒涛のデモ祭り〜
konokenj
10
3.1k
Claude Code、ちょっとした工夫で開発体験が変わる
tigertora7571
0
190
Featured
See All Featured
Color Theory Basics | Prateek | Gurzu
gurzu
0
220
[RailsConf 2023] Rails as a piece of cake
palkan
59
6.3k
Measuring Dark Social's Impact On Conversion and Attribution
stephenakadiri
1
140
The AI Search Optimization Roadmap by Aleyda Solis
aleyda
1
5.3k
SEO for Brand Visibility & Recognition
aleyda
0
4.3k
Avoiding the “Bad Training, Faster” Trap in the Age of AI
tmiket
0
96
What Being in a Rock Band Can Teach Us About Real World SEO
427marketing
0
180
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
231
22k
Why Our Code Smells
bkeepers
PRO
340
58k
SEO in 2025: How to Prepare for the Future of Search
ipullrank
3
3.3k
GitHub's CSS Performance
jonrohan
1032
470k
StorybookのUI Testing Handbookを読んだ
zakiyama
31
6.6k
Transcript
Head First Golang image package @__timakin__ golang.tokyo#19
SEIJI TAKAHASHI
None
ΞδΣϯμ *NBHFύοέʔδͷհ ࣮ྫͰֶͿ*NBHFύοέʔδ ը૾ͷ߹ɾՃ ը૾ͱจࣈͷ߹
QBDLBHFl*NBHFz w %ը૾Λѻ͏ͨΊͷύοέʔδ w +1( 1/( (*'ʹରԠ w Ͱ͖Δ͜ͱ w
৭ใऔಘ w 1PJOU 3FDUBOHMFͷૢ࡞ w ݁߹ॲཧʢESBXʣ w ϑΥʔϚοτͷσίʔυ
ྫʣͷ࢛֯ܗΛඳը
ϞβΠΫ γϟʔϓௐ ໌Δ͞ௐ ͳͲɺେମΓ͍ͨ͜ͱͰ͖Δ͕ ίʔυྔ͕ଟ͗͢ΔͷͰׂѪ
ͱ͍͏͔
ؙ࢛֯ͷඳըͱ͔ Ṗͷ৭ௐͱ͔
ͦΜͳ͜ͱͨͯ͘͠ ͜͜ʹ͖ͯ·͔͢ʁ
࣮ફͯ͠Έ·͠ΐ͏ʂ
ը૾ͷ߹ɾՃ
ͱ͜ΖͰօ͞Μ
!EFFFFU͞Μɻ ࠃͰϚΠΫϩαʔϏεͱ ͍͑͜ͷํɻ
Ͱ͕͢ɺ
ˌEFFFFU෩
None
खʹ࣋ͬͨΦϒδΣΫτʢʣΛ தԝʹਾ͑ͳ͕Β ࣸਅΛࡱΔࡱӨٕ๏ʢʁʣ
!?
खʹ࣋ͬͨΦϒδΣΫτʢʣΛ தԝʹਾ͑ͳ͕Β ࣸਅΛࡱΔࡱӨٕ๏ʢʁʣ
ͦΜͳʹखʹ͓͠ΌΕͳ Λ࣋ͭػձͳ͍
୭Ͱख๏Λ࠶ݱͰ͖Δͱศར
None
ɿW
Γ͍ͨ͜ͱ w Ͱ͍͍ײ͡ͷงғؾΛग़͍ͨ͠ w ͦΕΛखʹ࣋ͬͨঢ়ଶͰதԝʹఴ͍͑ͨ w ʹϑΥʔΧε͍ͯ͠Δ෩ʹ͍ͨ͠
ඞཁͳͷ w खɺɺഎܠ
ΦϦδφϧ
ඞཁͳͱ͜Ζ
దͳഎܠΛ୳͢
ݟ͚ͭΔ
࣮ w ྆ը૾ͷಡΈࠐΈ w എܠʹదͳ΅͔͠ΛೖΕΔ w खͷը૾Λਃ͠༁ఔʹαΠζௐ͢Δ w खट͕ࠨԼʹདྷΔΑ͏ʹͬ͢ͱ߹ w
ϑΝΠϧग़ྗ
HJUIVCDPNEJTJOUFHSBUJPOJNBHJOH w JNBHFύοέʔδͷϥούʔ w ΅͔͠໌ௐ͕ͷ͍͢͝؆୯ʹͰ͖Δ
ਃ͠༁ఔͷαΠζௐ
ͬ͢ͱࠨԼʹ߹
ग़ྗʜ
None
ը૾ͷ߹ɾՃ w HJUIVCDPNEJTJOUFHSBUJPOJNBHJOHΛ͏ ͱ͍ͩͿָʹ΅͔͠ͳͲΛೖΕΒΕΔ w ߹ͷࡍج४͕ࠨ্Ͱ͋Δ͜ͱʹҙ w ਖ਼༧֎ͷͦΕͬΆ͞ʹͳͬͨ
ˠਅ໘ͳ
αʔϏεӡ༻தɺ Ϛʔέࢪࡦͱͯ͠0(1ը૾Λ ࡞͢Δ͜ͱ͕͋ΔͷͰʁ
ը૾ͱจࣈͷ߹
Γ͍ͨ͜ͱ w 0(1എܠը૾ʹจࣈΛ߹͢Δ w ҙͷจࣈྻΛҙͷϑΥϯτͰɺ దͳҐஔʹදࣔ͢Δ
ૉࡐ
࣮ w ҙͷϑΥϯτΛಡΈࠐΉ w ͦͷϑΥϯτͰςΩετΛҙͷҐஔʹඳը w എܠͱॏͶ߹Θͤͯॻ͖ग़͠
HJUIVCDPNHPMBOHGSFFUZQFUSVFUZQF w ҙͷϑΥϯτͰςΩετΛҙͷҐஔʹग़͢ʹɺ ௨ৗͷը૾ՃͰෆՄɻ w GSFFUZQFύοέʔδΛ͏ɻ
ϑΥϯτͷಡΈࠐΈ
എܠΛॻ͖ग़͓ͯ͘͠
GPOU%SBXFSΛͬͨςΩετඳը
ग़ྗʜ
ग़ྗʜ
ը૾ͱจࣈͷ߹ w ϑΥϯτҐஔௐΛॊೈʹ͍ͨ͠߹ɺ GSFFUZQFύοέʔδͱGPOU%SBXMFSͷ߹Θٕͤ Ͱ͍͚Δ w ը૾ͷͲͷҐஔʹදࣔ͢Δ͔ɺจࣈͷંΓฦ͠ Ͳ͏͢Δ͔దٓௐͷඞཁ͋Γ
·ͱΊ JNBHFͰ৭ɾେ͖͞ͳͲ͕؆୯ʹऔಘͰ͖Δ ϥούʔΛ͑Ճ؆୯ ߹ͷ߹࠲ඪɾॻ͖ग़͠ॲཧͷ࣮͕ར༻έʔεʹԠ͡ ͯมΘͬͯ͘ΔͷͰҙͷඞཁ͋Γ
͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ