I'm new to Clojure so this could very well be an easy question. I'm having an issue with the REPL while using Leiningen.
Previously, I had created an app project while following a tutorial. When I would launch the REPL using lein repl with that project, it would always put me in the project's core namespace automatically. Even though I was in that namespace, I could still access built-in resources e.g. (doc build-in-function-name), etc.
Now, I've created another non-app project and I seem to have lost this autoloading capability. I'm now being put into a user namespace by default. Also, when I try to get access to my project's core namespace by doing (in-ns 'project.core), I lose access to build-in functions like doc.
Can anyone explain what's going on here?
in-nsdoes not load code. It switches to an ns, creating it if needed. It also does not do the default ns setup (eg. referring clojure.core). The proper way to load a namespace from code in the repl is with require(require 'some.ns), which can then be followed by(in-ns 'some.ns)if it succeeds.You can use the
:repl-options {:init-ns some.ns}option in project.clj to specify the namespace that leiningen should auto-load into your repl. When it's up to me I do not use this option, because it prevents me from having a usable repl if there is any bug that prevents my code from loading.