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
Clojureの基礎 〜マクロ編〜
Search
OHTA Shogo
June 11, 2016
Programming
2
620
Clojureの基礎 〜マクロ編〜
2016/6/11 プログラミング言語基礎勉強会のLT発表資料です。
OHTA Shogo
June 11, 2016
Tweet
Share
More Decks by OHTA Shogo
See All by OHTA Shogo
テンクーでのClojure活用事例
athos
0
340
軽量デバッグツールPostmortemの紹介.pdf
athos
1
200
Clojure 1.10 概要紹介
athos
3
650
やってみる!clojure.spec
athos
4
1k
kitchen-async: a promising (?) Promise library, or a poor man's core.async
athos
3
480
Clojure 1.9 概要紹介
athos
4
1.4k
ここ最近のClojureScript
athos
5
1.7k
(= ? (+ nREPL Docker))
athos
0
530
clojure.specの話
athos
3
2.3k
Other Decks in Programming
See All in Programming
#QiitaBash MCPのセキュリティ
ryosukedtomita
1
1.4k
git worktree × Claude Code × MCP ~生成AI時代の並列開発フロー~
hisuzuya
1
580
Systèmes distribués, pour le meilleur et pour le pire - BreizhCamp 2025 - Conférence
slecache
0
120
テストから始めるAgentic Coding 〜Claude Codeと共に行うTDD〜 / Agentic Coding starts with testing
rkaga
13
4.7k
Deep Dive into ~/.claude/projects
hiragram
14
2.6k
AIエージェントはこう育てる - GitHub Copilot Agentとチームの共進化サイクル
koboriakira
0
600
Blazing Fast UI Development with Compose Hot Reload (droidcon New York 2025)
zsmb
1
300
XP, Testing and ninja testing
m_seki
3
250
Hack Claude Code with Claude Code
choplin
4
2.2k
A full stack side project webapp all in Kotlin (KotlinConf 2025)
dankim
0
120
PicoRuby on Rails
makicamel
2
130
“いい感じ“な定量評価を求めて - Four Keysとアウトカムの間の探求 -
nealle
2
10k
Featured
See All Featured
Balancing Empowerment & Direction
lara
1
430
Docker and Python
trallard
44
3.5k
Scaling GitHub
holman
460
140k
How STYLIGHT went responsive
nonsquared
100
5.6k
We Have a Design System, Now What?
morganepeng
53
7.7k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
Embracing the Ebb and Flow
colly
86
4.7k
The Cult of Friendly URLs
andyhume
79
6.5k
Building a Modern Day E-commerce SEO Strategy
aleyda
42
7.4k
The World Runs on Bad Software
bkeepers
PRO
69
11k
How to Think Like a Performance Engineer
csswizardry
25
1.7k
Why You Should Never Use an ORM
jnunemaker
PRO
58
9.4k
Transcript
$MPKVSFͷجૅ ϓϩάϥϛϯάݴޠجૅษڧձ 2016/06/11 @athos0220
ࣗݾհ ‣ 5XJUUFS!BUIPT ‣ χϟϯύε ג ॴଐ ‣ $MPKVSFίϯτϦϏϡʔλ
$MPKVSFͷجૅΛ࡞Δͷ ࠓճ-JTQͱͯ͠ͷಛʹϑΥʔΧε -JTQ ؔ ϓϩάϥϛϯά ରత ϓϩάϥϛϯά +7.
-JTQ
-JTQ ‣ લஔه๏͕ಛ ‣ ࠷ॳͷཁૉ͕ΦϖϨʔλɺͦΕҎ͕߱Ҿ ‣ ݴޠͷίΞ͕ඇৗʹγϯϓϧ (defn distance [x
y] (sqrt (+ (* x x) (* y y))))
-JTQ ‣ લஔه๏͕ಛ ‣ ࠷ॳͷཁૉ͕ΦϖϨʔλɺͦΕҎ͕߱Ҿ ‣ ݴޠͷίΞ͕ඇৗʹγϯϓϧ (defn distance [x
y] (sqrt (+ (* x x) (* y y)))) ΦϖϨʔλ Ҿ
$PEFBT%BUB ‣ $MPKVSFίʔυΛ؆୯ʹσʔλͱͯ͠ѻ͑Δ ‣ $MPKVSFͷσʔλͰίʔυΛॻ͍͍ͯΔͱ͍͑Δ (read-string “(* x x)”) ;=>
(* x x)
$PEFBT%BUB ‣ $MPKVSFίʔυΛ؆୯ʹσʔλͱͯ͠ѻ͑Δ ‣ $MPKVSFͷσʔλͰίʔυΛॻ͍͍ͯΔͱ͍͑Δ (read-string “(* x x)”) ;=>
(* x x) ͭͷγϯϘϧ Y Y͔ΒͳΔϦετ
ॲཧܥͰͷྲྀΕ ίʔυ จࣈྻ ίʔυ σʔλ όΠτίʔυ
ॲཧܥͰͷྲྀΕ ίʔυ จࣈྻ ίʔυ σʔλ όΠτίʔυ Ϧʔυ ίϯύΠϧ
ϚΫϩ
ϚΫϩͱ ‣ ίʔυ͔ΒίʔυͷมΛఆٛ͢Δؔ ‣ Ϣʔβ͕͖ͳΑ͏ʹߏจΛఆٛͰ͖ΔΈ ‣ ૉͳ͕Βڧྗͳϝλϓϩάϥϛϯάͷπʔϧ
ॲཧܥͰͷྲྀΕ ίʔυ จࣈྻ ίʔυ σʔλ όΠτίʔυ Ϧʔυ ίϯύΠϧ
ॲཧܥͰͷྲྀΕ ίʔυ จࣈྻ ίʔυ σʔλ όΠτίʔυ Ϧʔυ ίϯύΠϧ ϚΫϩల։
PSΛఆٛͯ͠ΈΔ ‣ ͭΊͷࣜͷ͕USVFͩͬͨΒͭΊΛབྷධՁ (or (expr-1) (expr-2)) (let [v (expr-1)] (if
v v (expr-2))) ల։
PSΛఆٛͯ͠ΈΔ (defmacro or [expr1 expr2] `(let [v# ~expr1] (if v#
v# ~expr2)))
XJUIPQFOΛఆٛͯ͠ΈΔ ‣ +BWBͷUSZXJUISFTPVSDFTͷΑ͏ͳߏจ (with-open [f (reader “foo”)] (write-to-file f)) (let
[f (reader “foo”)] (try (write-to-file f) (finally (.close f)))) ల։
XJUIPQFOΛఆٛͯ͠ΈΔ (defmacro with-open [[name file] body] `(let [~name ~file] (try
~body (finally (.close ~name)))))
࣮։ൃͰͷϚΫϩ
$PNQPKVSF ‣ $MPKVSFͷϧʔςΟϯάϥΠϒϥϦ (defroutes app-routes (GET “/” [] (index)) (GET
“/en” [] (index)) (GET “/fr” [] (index-fr)) (GET “/:greeting” [greeting] (view greeting)))
DPSFNBUDI ‣ ύλʔϯϚονϥΠϒϥϦ (match inst [:mov z x] (recur (subst
z x) insts) [:add z x y] (recur (do-op + z x y) insts) [:sub z x y] (recur (do-op - z x y) insts) [:push z x] (recur (push z x) insts) [:pop z] (recur (pop z) insts) [:jnz l] (if (:flag env) [l env] (recur env insts)) [:jz l] (if (:flag env) (recur env insts) [l env] …)
DPSFUZQFE ‣ ੩తܕνΣοΫϥΠϒϥϦ (ann new-file [(U URI String) -> File])
(defn new-file [s] (if (string? s) (File. ^String s) (File. ^URI s)))
DPSFBTZOD ‣ νϟωϧϕʔεͷඇಉظϓϩάϥϛϯάϥΠϒϥϦ (go (while true (let [v (<! ch)]
(println v)))) (go (loop [i 0] (>! ch i) (recur (inc i)))) ड৴ଆίʔυ ૹ৴ଆίʔυ
͓·͚ ‣ ϚΫϩඇৗʹڧྗͳͷͰѱ༻ͯ͠ݴޠࣗମΛେ෯ ʹม͑ͯ͠·͏͜ͱͰ͖Δ ‣ ྫʣΰϧϑ༻3VCZॲཧܥHPSVCZͷ฿ ϝιουΛॖܗͰݺΔ qFYNBUDIJOH
- 1.up(10) {|i| p i} - [1,4,9].ew{|x,i| ps “#{i}:#{x}”} upto each_with_index puts
HPDMPKVSF (doseq [[l n] (frequencies (map #(count (str %)) (keys
(ns-publics ’clojure.core))))] (printf “%2d %s\n” l (apply str (repeat n \*)))) ΦϦδφϧͷίʔυ
HPDMPKVSF (doseq [[l n] (frequencies (map #(count (str %)) (keys
(ns-publics ’clojure.core))))] (printf “%2d %s\n” l (apply str (repeat n \*)))) (goclojure (dq [[l n] (qs (mp #(ou (sr %)) (ks (nsb ’clojure.core))))] (pf “%2d %s\n” l (ay sr (rep n \*)))) ΦϦδφϧͷίʔυ HPDMPKVSFΛͬͯॻ͖͑ͨίʔυ
·ͱΊ ‣ -JTQͰ͋Δ͜ͱ$MPKVSFͷجૅΛ࡞Δཁૉͷͭ ‣ ϚΫϩڧྗͳϝλϓϩάϥϛϯάͷπʔϧ ‣ ࣮։ൃͰ͑Δ͞·͟·ͳศརϚΫϩ͕͋Δ ‣ ͨͩ͠ཚ༻͗͢͠Δͱίʔυ͕ಡΊͳ͘ͳΔͷͰɺ ຊʹඞཁͳγνϡΤʔγϣϯΛݟۃΊΔ͜ͱ