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
scala introduction 2018.06.12
Search
matsutomu
June 12, 2018
Programming
0
180
scala introduction 2018.06.12
scala introduction
matsutomu
June 12, 2018
Tweet
Share
More Decks by matsutomu
See All by matsutomu
scala recommend learning materials
matsutomu
0
160
Other Decks in Programming
See All in Programming
つよそうにふるまい、つよい成果を出すのなら、つよいのかもしれない
irof
1
300
Benchmark
sysong
0
270
High-Level Programming Languages in AI Era -Human Thought and Mind-
hayat01sh1da
PRO
0
230
生成AIで日々のエラー調査を進めたい
yuyaabo
0
650
AIコーディング道場勉強会#2 君(エンジニア)たちはどう生きるか
misakiotb
1
250
5つのアンチパターンから学ぶLT設計
narihara
1
110
20250628_非エンジニアがバイブコーディングしてみた
ponponmikankan
0
430
Result型で“失敗”を型にするPHPコードの書き方
kajitack
4
380
都市をデータで見るってこういうこと PLATEAU属性情報入門
nokonoko1203
1
570
XSLTで作るBrainfuck処理系
makki_d
0
210
エラーって何種類あるの?
kajitack
5
310
Cursor AI Agentと伴走する アプリケーションの高速リプレイス
daisuketakeda
1
130
Featured
See All Featured
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.7k
Designing for Performance
lara
609
69k
A Tale of Four Properties
chriscoyier
160
23k
GraphQLとの向き合い方2022年版
quramy
48
14k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.1k
Site-Speed That Sticks
csswizardry
10
660
Measuring & Analyzing Core Web Vitals
bluesmoon
7
490
Faster Mobile Websites
deanohume
307
31k
Designing for humans not robots
tammielis
253
25k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.3k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
331
22k
Transcript
4DBMB*OUSPEVDUJPO .BUTVNPUP5TVUPNV !NBUTVUPPN
͡Ίʹ ࣗݾհ ɹɹদຊɹ ɹɹձࣾһʢ౦ژຊࣾͷاۀۈʣ ɹɹόϦόϦ։ൃʂͯ͠·ͤΜ ɹɹ͕ɺݸਓతʹ4DBMBʹڵຯΛ͕࣋ͬͯͨͪ·ͨ͠ ɹɹͬͱ4DBMBͷྗΛʹ͚͍ͨதஉͰ͢
͡Ίʹ 4DBMBʢεΧϥʣͱʁ
͡Ίʹ εΠε࿈Պେֶ &1'- ϚʔςΟϯɾΦʔμεΩʔڭत ൚༻ݴޠεέʔϥϒϧͰͳͯ͘ͳΒͳ͍ɻ ಉ֓͡೦Ͱɺখ͍͞ϓϩάϥϜେ͖ͳϓϩάϥϜهड़Ͱ͖Δ͖Ͱ͋Δɻ εέʔϥϏϦςΟؔܕݴޠͱΦϒδΣΫτࢦݴޠͷ ͭͷϓϩάϥϛϯάͷ֓೦Λ౷߹͠ɺҰൠԽ͢Δ͜ͱʹΑΓ࣮ݱͰ͖Δɻ #Z8JLJQFEJB
͡Ίʹ ྺ࢙ ࠒʹطʹઃܭ͕ਐΊΒΕ͓ͯΓ ʹެ։͞Ε͍ͯΔɻ ࠒʹUXJUUFSͷόοΫΤϯυʹ࠾༻ ʹେ෯ͳมߋͷ4DBMB͕ϦϦʔε ݱࡏͷόʔδϣϯ IUUQTXXXTDBMBMBOHPSH
͡Ίʹ ΦϒδΣΫτࢦɹͱɹؔܕݴޠͷಛΛ ߹Θͤ࣋ͭϓϩάϥϛϯάݴޠ +7.Ͱಈ࡞͠·͢
͡Ίʹ ͱݴ͍ग़͢ͱɺएׯখ͍͠ͷͰ
͡Ίʹ ֶͼॳΊ͙ͯ͢ʹಈ͔ͤΔ ߏจͷޡΓίϯύΠϧ࣌ʹ ͔ͬ͠ΓνΣοΫͯ͘͠ΕΔ ༏͍͠ϓϩάϥϛϯάݴޠ
͡Ίʹ ͱݴ͏ࣄͰ ·ͣಈ͔ͯ͠Έ·͠ΐ͏
4DBTUJF IUUQTTDBTUJFTDBMBMBOHPSH
4DBTUJF )FMMP4DBMB
4DBTUJF มએݴར༻
3&1- ଞʹ
3&1- ؆୯ʹ4DBMBͷίʔυยΛ࣮ߦՄೳ
3&1- ৭ʑͳߏจ͕ࢼͤ·͢
3&1- ৭ʑͳߏจ͕ࢼͤ·͢ WBMOBNFl!NBUTVUPNVz WBSNPOFZ
3&1- ৭ʑͳߏจ͕ࢼͤ·͢ GPS YUP \ QSJOUMO Y ^
3&1- WBMDPOEJUJPOlѱ͍ DPOEJUJPONBUDI\ DBTFྑ͍QSJOUMO ͘·Ͱࣄ͢Δ DBTFѱ͍QSJOUMO ̎̍࣌͝Ζʹؼ͢Δ ^
3&1- WBM BHF DPOEJUJPO த ѱ͍ BHF DPOEJUJPO
NBUDI\ DBTF த ྑ͍ QSJOUMO ૣ৸ૣى͖ʹͳΔ DBTF த ѱ͍ QSJOUMO ૣ৸ૣى͖ʹͳΔ DBTF த @ QSJOUMO ૣ৸ૣى͖ʹͳΔ DBTF @ ྑ͍ QSJOUMO ૣ৸ૣى͖ʹͳΔ DBTF @ ѱ͍ QSJOUMO ૣ৸ૣى͖ʹͳΔ DBTF @ @ QSJOUMO ૣ৸ૣى͖ʹͳΔ ^
4VSQSJTF ಥવͰ͕͢ɾɾɾ
4VSQSJTF ͜͜ͰΫΠζͰ͢
4VSQSJTF ϕΫτϧ a, b ͕ߦ͢Δ͔Λఆ͢Δࣜʁ (ax1, ay1 ) (ax0 ,
ay0 ) (bx0 , by0 ) (bx1 , by1 ) a b ʢࢀߟʣʰϓϩάϥϛϯάίϯςετ߈ུͷͨΊͷΞϧΰϦζϜͱσʔλߏʱɹ *4#/
4VSQSJTF
4VSQSJTF ϕΫτϧ a, b ͕ߦ͢Δ͔Λఆ͢Δࣜʁ (ax1, ay1 ) (ax0 ,
ay0 ) (bx0 , by0 ) (bx1 , by1 ) a b ͑ ϕΫτϧͷੵ͕̌ͷ߹ʹߦ͢Δɻ aɾb = |a||b|cosθ = ax * bx + ay * by
4VSQSJTF PCKFDU$HM4BNQMF\ DBTFDMBTT1PJOU Y%PVCMF Z%PVCMF \ EFG Q1PJOU 1PJOU1PJOU UIJTY
QY UIJTZ QZ ^ UZQF(FP7FDUPS1PJOU ੵ EFGEPU B1PJOU C1PJOU %PVCMFBY CY BZ CZ EFGJT0SUIPHPOBM B(FP7FDUPS C(FP7FDUPS #PPMFBOEPU B C ^
࣮༻ྫ Ͳ͏Ͱ͠ΐ͏͔ʁ ༏͍͠ϓϩάϥϛϯάݴޠ ͷΠϝʔδΛ࣋ͯ·͔ͨ͠ʁ
࣮༻ྫ ࣮ࡍͷͱ͜Ζʁ اۀɾ044
࣮༻ྫ ɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹʢࢀߟʣʲ4DBMBΛ࠾༻͍ͯ͠Δاۀ ϓϩμΫτ Ұཡʳɹɹɹ IUUQTRJJUBDPNPVCBLJPVJUFNTGEDBEBF ւ֎ 5XJUUFS -JOLFE*O 'PVS4RVBSF 1BZ1BM
$PVSTFSB 5IF(VBSEJBO UVNCMS
࣮༻ྫ ɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹʢࢀߟʣʲ4DBMBΛ࠾༻͍ͯ͠Δاۀ ϓϩμΫτ Ұཡʳɹɹɹ IUUQTRJJUBDPNPVCBLJPVJUFNTGEDBEBF ࠃ υϫϯΰ ͯͳ ηϓςʔχɾΦϦδφϧ ϏζϦʔν
$IBU8PSL ΤϜεϦʔ /VMBC αΠόʔΤʔδΣϯτ
࣮༻ྫ اۀ͚ͩͰͳ͘ 044݁ߏ͋Γ·͢
࣮༻ྫ 4DBMBͷ044Ұཡ ʢࢀߟʣʲ5IJTJTBNPTUQPQVMBSSFQPTJUPSZMJTUGPS4DBMBTPSUFECZOVNCFSPGTUBSTʳɹɹɹ IUUQTHJUIVCDPNLBYBQBSMCMPCNBTUFS3&"%.&4DBMBNE
࣮༻ྫ 1MBZ'SBNFXPSL 8FCΞϓϦέʔγϣϯ ϑϨʔϜϫʔΫ
࣮༻ྫ σʔλϕʔεΞΫηε༻ ʢؔܕʣ
࣮༻ྫ TDBMBUSB 8FCϚΠΫϩϑϨʔϜϫʔΫ
࣮༻ྫ 4LJOOZ'SBNFXPSL 8FCΞϓϦέʔγϣϯ ϑϨʔϜϫʔΫ
࣮༻ྫ 4DBMJLF+%#$ σʔλϕʔεΞΫηε༻
࣮༻ྫ ෛՙࢼݧπʔϧʢ8FCʣ
࣮༻ྫ ϝοηʔδϕʔεͷඇಉظॲཧΛ࣮ݱ
࣮༻ྫ ετϦʔϛϯάॲཧ༻
࣮༻ྫ େྔσʔλΛฒྻࢄॲཧ
࣮༻ྫ ػցֶश༻ΞϓϦέʔγϣϯͷ։ൃࢧԉ
࣮༻ྫ 4DBMBͷ(JUϓϥοτϗʔϜ
·ͱΊ ͪΐͬͱͨ͠εΫϦϓτ 8FCΞϓϦέʔγϣϯ σʔλϕʔεΞΫηε ฒྻॲཧ େྔσʔλॲཧ ։ൃࢧԉʢ(JU 6OJU5FTU ίʔυॻࣜʣ ͳͲͳͲ
4DBMB৭ʑͳιϑτΣΞ͕ଘࡏ
·ͱΊ ͦͷഎܠʹ ΦϒδΣΫτࢦ ͱ ؔܕݴޠ ͱݴͬͨߟ͑ํ͚ͩͰͳ͘ ৭ʑͳར͕͋Δͷͩͱࢥ͍·͢
·ͱΊ ͜Ε͔ΒҰॹʹ4DBMBΛֶͼ·ͤΜ͔ʁ ͦͯ͠044ͷੈքʹೖ͠·ͤΜ͔ʁ