LT役に立たないScala入門はじめの0歩

Transcript

1. ໾ʹཱͨͳ͍
   4DBMB͸͡Ίͷา גࣜձࣾɹϑΝϯίϛϡχέʔγϣϯζ
 αʔϏε։ൃ෦ɹ৘ใՊֶٕज़ݚڀॴ
 ઒࡚ɹହҰ
2. ࣗݾ঺հ w ໊લɿ઒࡚ɹହҰ
   w ͓࢓ࣄɿΤϯδχΞ݉σʔλαΠΤϯςΟετ
   w झຯɿఱؾ༧ใ
   w ϓϩάϥϛϯάྺɿ໿೥
   w FNBDTྺɿ೥
3. ࣗݾ঺հ w $ݴޠ
   w +BWB4DSJQU
   w $
   w 1FSM
   w "4.ʢY1*$"3.ʣ
   w 1ZUIPO
   w (P
   w 4IFMM
   4DSJQU ೥લ ೥લ ݱࡏ গ͠͸৮ͬͨݴޠɿ+BWBɺ3VCZɺ&NBDT
   -JTQ
4. ͦ͏ʂ4DBMBͱ͸
   ύϥμΠϜ͕ҧ͏ʂʂ
5. ͱ͜ΖͰɻɻɻ
6. ৽͍͠ݴޠΛ࢝ΊΔ࣌͸
   ؀ڥઃఆ͔Βʂ
7. ؀ڥ 6CVOUV
   
   -54
8. ؀ڥ 6CVOUV
   
   -54 FNBDT
   
9. ؀ڥ 6CVOUV
   
   -54 FNBDT
    ੲҒ͍ਓ͕ݴ͍·ͨ͠
   ʮFNBDT͸؀ڥͰ͋Δʯͱ
   ʮFNBDT͸04Ͱ͋Δʯͱ
10. ΋͏͜ͷลͰྗਚ͖ͯ ΋͍͍ΑͶʁ
11. 
    FNBDTͷΠϯετʔϧ ιʔε͔Βͬ͘͞Γ
    ΛΠϯετʔϧ͠·͢ʂ IUUQGUQKBJTUBDKQQVC(/6FNBDTFNBDTUBSH[ $ sudo apt-get -y install build-essential libncurses-dev $ wget http://ftp.jaist.ac.jp/pub/GNU/emacs/emacs-25.3.tar.gz $ tar xf emacs-25.3.tar.gz $ cd emacs-25.3 $ ./configure —without-x $ make $ sudo make install
12. 
    +%, PQFOKELKEL $ sudo apt-get -y install openjdk-8-jdk
13. 
    TCUͷΠϯετʔϧ ͷΠϯετʔϧ $ echo "deb https://dl.bintray.com/sbt/debian /" | sudo tee -a /etc/apt/sources.list.d/sbt.list $ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2EE0EA64E40A89B84B2DF73499E82A75642AC823 $ sudo apt-get update $ sudo apt-get install sbt $ mkdir -p ~/.sbt/1.0/plugins/ $ echo “addSbtPlugin(\“org.ensime\” % \“sbt-ensime\” % \“2.0.1\”)” > ~/.sbt/1.0/plugins/plugins.sbt
14. 
    TCUͷىಈΛ֬ೝ $ sbt
15. 
    TCUͰ)FMMP8PSME $ sbt new sbt/scala-seed.g8 …
 name [My Something Project]: Hello
 … $ cd hello $ sbt … sbt:Hello> run … sbt:Hello> exit $
16. 
    FNBDTΛىಈ $ cd hello $ emacs -nw ~/.emacs.d/init.el (require 'package) (add-to-list 'package-archives '("melpa" . "http://melpa.milkbox.net/packages/") t) (add-to-list 'package-archives '("marmalade" . "http://marmalade-repo.org/packages/")) (package-initialize) M-x package-list-packages C-s ensime i C-s use-package i x (use-package ensime :ensure t :pin melpa-stable)
17. 
    FOTJNFઃఆ $ cd hello $ sbt ensimeConfig
18. 
    ϓϩδΣΫτΛ։͘ $ emacs -nw src/main/scala/example/Hello.scala M-x ensime C-c C-v s
19. ,FZ#JOE ,FZ#JOE ໾໨ $D
    $W
    T TCUͷىಈ $D
    $D
    F Τϥʔͷදࣔ $D
    $W
    S ࢀরݩͷදࣔ
20. ݁࿦ w FNBDT͕ͨͩͰ͑͞ϝϞϦΛ৯͏ͷʹഥंΛ͔͚ͯᷰ͏ɻ
    w ݁ߏΊΜͲ͍ ૉ௚ʹ*%&ʢ*OUFMMJ+ʣ࢖ͬͨ΄͏ָ͕ͩͬͨʹҧ͍ͳ͍ ͜Ε͔Βؤுͬͯগ͍͖͍֮ͣͭ͑ͯͨ͠ͳͱࢥ͍·͢ʂ