CODEWITHSUNDEEP
clojure
Allyl Isocyanate
Allyl Isocyanate

Reputation: 13626

Correct way to "use" libraries in Clojure?

I'm working through "Clojure in Action", and I have been instructed to create a file "in a folder named chapter08 within your source directory" and try to require it.

I created the following files (tried both - and _ delimited)

~/clojure-1.4.0$ ls src/chapter08/
date-operations-spec.clj    date_operations.clj
date-operations.clj     date_operations_spec.clj

I tried to require in the REPL using code from the book, but keep failing:

~/clojure-1.4.0$ java -cp clojure-1.4.0.jar clojure.main
Clojure 1.4.0
user=> 
(ns chapter08.date-operations-spec
  (:use chapter08.date-operations)
  (:use clojure.test))
FileNotFoundException Could not locate chapter08/date_operations__init.class or chapter08/date_operations.clj on classpath:   clojure.lang.RT.load (RT.java:432)

Upvotes: 2

Views: 292

Answers (2)

Arthur Ulfeldt
Arthur Ulfeldt

Reputation: 91554

use leiningen which has become the ubiquitous tool for managing such things since Amit published that excellent book. I just spent longer writing this than the time required to setup leiningen.

then run lein new chapter8.
copy the file to chapter8/src/chapter8/
Run lein repl

Upvotes: 5

Joost Diepenmaat
Joost Diepenmaat

Reputation: 17773

Using plain java to start clojure is a pain in the neck. For instance, your java -cp ... call will not put ./src on the classpath . Please just use leiningen.

Upvotes: 1

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