&gt; I&#x27;d love to hear the argument that says that it is...<p><a href="http:&#x2F;&#x2F;science.raphael.poss.name&#x2F;rust-for-functional-programmers.html" rel="nofollow">http:&#x2F;&#x2F;science.raphael.poss.name&#x2F;rust-for-functional-program...</a><p>I personally think Rust isn&#x27;t functional, but rather multi-paradigm with a strong functional influence.  But if you were to add TCO and a few other features, I think Rust <i>would</i> be a full-blown functional language, so it may get there yet.<p>In any case, it&#x27;s useless arguing over (should have known better than say anything), so this will be my last word on the issue.