On Thu, Sep 9, 2010 at 10:07 AM, Mike Meyer <
[email protected]> wrote:
> So, I'm asking for someone to show me I'm wrong. In particular, if I
> wanted to deploy a simple web app (the classic "Hello World") on your
> favorite java or clojure web framework, how many lines of text do I
> have to deal with? Most importantly, how many of those are program
> text, and how many are framework boilerplate(*)? Finally, how many
> tools do I have to use to get it deployed(+)?
>
If you're going for simplicity over robustness and you have lein installed,
all you need to do is the following:
lein new nano-web
Edit your project.clj
(defproject nano-web "1.0.0-SNAPSHOT"
:dependencies [[org.clojure/clojure "1.2.0"]
[org.clojure/clojure-contrib "1.2.0"]
[ring "0.2.5"]])
So far we have 4 lines to define our dependencies. Edit
src/core/nano_web.clj
(ns nano-web.core
(use [ring.adapter.jetty :only [run-jetty]]
[ring.util.response :only [response]]))
(defn hello-world [req]
(response "Hello World!"))
(defonce server (run-jetty hello-world {:port 8080 :join? false}))
That's the 8 lines of actual code needed to have a full functioning web
application. Let's start it:
lein repl
user=> (load "nano_web/core")
So 12 lines of code and 2 command line operations, 1 expression at the REPL.
Cheers,
David
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