title: TypeScript: Lambdas and using 'this'
body: <p>JavaScript frameworks often call callbacks using apply().</p>
  
  <p>TypeScript's arrow notation, however, doesn't seem to allow me to access the 'this' pointer.</p>
  
  <p>How's it done?</p>
  
  <p>If it isn't, is there a place to down-vote the current 'this' handling on Lambdas?</p>