title: Angular:What does it mean by reactive forms are immutable?
body: <p>I'm currently learning angular&amp; I was reading about differences between reactive forms and template-driven forms from <a href="https://angular.io/guide/forms-overview" rel="nofollow noreferrer">https://angular.io/guide/forms-overview</a>. The website says reactive forms are immutable and template-driven forms are mutable. I don't really understand what immutable in this context means.I mean if  user can update the state of the form by providing values to form controls, doesn't that make form mutable?</p>