Clojure Leiningen

Clojureことはじめ

"Leiningen is the easiest way to use Clojure. With a focus on project automation and declarative configuration, it gets out of your way and lets you focus on your code."
Leiningen

leiningen をインストール

$ brew install leiningen

プロジェクトを作成

$ lein new hello

ディレクトリ構成は以下

$ tree
.
├── CHANGELOG.md
├── LICENSE
├── README.md
├── dev-resources
├── doc
│   └── intro.md
├── project.clj
├── resources
├── src
│   └── hello
│       └── core.clj
├── target
│   ├── classes
│   │   └── META-INF
│   │       └── maven
│   │           └── hello
│   │               └── hello
│   │                   └── pom.properties
│   └── stale
│       └── extract-native.dependencies
└── test
    └── hello
        └── core_test.clj

14 directories, 9 files

project.cljを書き換え

cat project.clj
(defproject hello "0.1.0-SNAPSHOT"
  :description "FIXME: write description"
  :url "http://example.com/FIXME"
  :license {:name "Eclipse Public License"
            :url "http://www.eclipse.org/legal/epl-v10.html"}
  :dependencies [[org.clojure/clojure "1.7.0"]]
  :main hello.core)

lein repl で 実行。lein --help すると "Start a repl session either with the current project or standalone."

$ lein repl
nREPL server started on port 52522 on host 127.0.0.1 - nrepl://127.0.0.1:52522
REPL-y 0.3.7, nREPL 0.2.10
Clojure 1.7.0
Java HotSpot(TM) 64-Bit Server VM 1.8.0_65-b17
    Docs: (doc function-name-here)
          (find-doc "part-of-name-here")
  Source: (source function-name-here)
 Javadoc: (javadoc java-object-or-class-here)
    Exit: Control+D or (exit) or (quit)
 Results: Stored in vars *1, *2, *3, an exception in *e

hello.core=> fo #Tabで候補が表示される
foo      for      force    format
hello.core=> (foo "delaemon")
delaemon Hello, World!
nil