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
Search
Samuel Flores
November 29, 2014
Programming
4
200
Clojure
Apresentando Clojure hoje no encontro do GuruPI
Samuel Flores
November 29, 2014
Tweet
Share
More Decks by Samuel Flores
See All by Samuel Flores
Introdução ao MRuby
samflores
1
56
Gulp.js
samflores
1
150
Por que Ruby?
samflores
1
140
Extendendo Ruby com C (& cartoons)
samflores
3
180
Sinatra
samflores
2
220
Other Decks in Programming
See All in Programming
What's new in Spring Modulith?
olivergierke
1
170
Google Opalで使える37のライブラリ
mickey_kubo
3
140
コードとあなたと私の距離 / The Distance Between Code, You, and I
hiro_y
0
190
iOSでSVG画像を扱う
kishikawakatsumi
0
160
Writing Better Go: Lessons from 10 Code Reviews
konradreiche
3
6.3k
Software Architecture
hschwentner
6
2.3k
kiroとCodexで最高のSpec駆動開発を!!数時間で web3ネイティブなミニゲームを作ってみたよ!
mashharuki
0
890
Go言語はstack overflowの夢を見るか?
logica0419
0
520
GC25 Recap: The Code You Reviewed is Not the Code You Built / #newt_gophercon_tour
mazrean
0
110
Webサーバーサイド言語としてのRustについて
kouyuume
1
4.6k
釣り地図SNSにおける有料機能の実装
nokonoko1203
0
200
なぜGoのジェネリクスはこの形なのか? - Featherweight Goが明かす設計の核心
qualiarts
0
240
Featured
See All Featured
Fantastic passwords and where to find them - at NoRuKo
philnash
52
3.5k
jQuery: Nuts, Bolts and Bling
dougneiner
65
7.9k
The World Runs on Bad Software
bkeepers
PRO
72
11k
Visualization
eitanlees
149
16k
Git: the NoSQL Database
bkeepers
PRO
431
66k
Site-Speed That Sticks
csswizardry
13
920
Agile that works and the tools we love
rasmusluckow
331
21k
VelocityConf: Rendering Performance Case Studies
addyosmani
333
24k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
333
22k
Stop Working from a Prison Cell
hatefulcrawdad
272
21k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
140
34k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Transcript
(Clojure) @samflores
Lisp
Lots of InSignificant Parenthesis
LISt Processing
(1 2 3) *
Homoiconicidade
(+ 2 3) ; 5
(+ 2 4 6) ; 12
(doc +) clojure.core/+ ([] [x] [x y] [x y &
more]) Returns the sum of nums. (+) returns 0. Does not auto-promote longs, will throw on overflow. See also: +'
Funcional
(odd? 2) ; false
(def par? (fn [n] (even? n))) (par? 2); true
(def par? even?) (par? 2); true
(defn greet [name] (str "Hello, " name)) (greet "John"); Hello,
John
(map :name [{:name "John" :age 15} {:name "Mary" :age 10}])
(reduce + (range 10))
(apply + (repeat 30 8)) ; 240
(def dobra (partial * 2)) (dobra 5) ; 10
Simplicidade
def fn #() if do let quote ‘() var #’()
loop recur throw try formas especiais
alias and BEGIN begin break case class def defined? do
else elsif END end ensure for if in module next not or redo rescue retry return self super then undef unless until when while yield Ruby
assert break class const continue default do double else enum
extends final finally float for goto if implements import instanceof int interface long native new package private protected public return short static strictfp super switch synchronized this throw throws transient try void volatile while Java
Pragmatismo
(def b 2r101010) (def n 1337N) (def m 3.14159M) (def
r #"(\d+)") data types
(def l '(1 2 3)) (def v [1 2 3])
(def m {:a 1 :b 2}) (def s #{:x :y :z}) data types
JVM*
(def today (java.Util.Date.)) (.year today) ; today.year() (Integer/parseInt "10") Java
interop
Imutabilidade*
(def l '(1)) (conj l 2) (prn l) ; (1)
& Concorrência Paralelismo
STM atoms agents delays futures promisses refs core.async …
(def l (atom [])) (swap! l conj 1) atoms
(def c (agent 0)) (send c inc) (send c dec)
(await c) agents
(defn long-running-job [n] (Thread/sleep 3000) (+ n 10)) (pmap long-running-job
(range 100)) pmap
(def ch (chan)) (go (print (<! ch))) (put! ch "Hi")
core.async
Environment
(defroute "/" [] (home-handler)) (defroute "/:user” [user] (profile-handler user)) compojure
:dependencies [[org.clojure/clojure "1.6.0"] [org.clojure/core.async "0.1.346.0-17112a-alpha"]] leiningen
$ lein deps $ lein ring server leiningen
(select user (with address) (fields :firstName :lastName :address.state) (where {:email
"
[email protected]
"})) korma
ClojureScript core.typed datomic Clojars jetty http-kit …
Comunidade
clojure.org clojure-doc.org clojuredocs.org grimoire.arrdem.com #clojure FreeNode
(obrigado) @samflores