title: angular: toggle text of button based on boolean value in model
body: <p>What is a simple way to change the text in a button element based on a boolean value?</p>
  
  <p>pseudo code:</p>
  
  <pre><code>&lt;button&gt; some text OR some other text &lt;/button&gt;
  </code></pre>
  
  <p>I read this: <a href="https://stackoverflow.com/questions/16584346/angularjs-if-then-else-construction-in-expression">Angularjs if-then-else construction in expression</a></p>
  
  <p>and this regarding ng-switch: <a href="http://docs.angularjs.org/api/ng.directive:ngSwitch" rel="noreferrer">http://docs.angularjs.org/api/ng.directive:ngSwitch</a></p>
  
  <p>Neither seems to work using bool value from model</p>