Why should I use 'apply' in Clojure?

Question

This is what Rich Hickey said in one of the blog posts but I don\'t understand the motivation in using apply. Please help.

A big difference between Clojur

Answer 1

apply basically unwraps a sequence and applies the function to them as individual arguments.

Here is an example:

(apply + [1 2 3 4 5])

That returns 15. It basically expands to (+ 1 2 3 4 5), instead of (+ [1 2 3 4 5]).