 such that algorithms are non mutating
      (no side effects). However, due to the high cost of returning full sequences
      such as vectors and lists, <span class="emphasis"><em>Views</em></span> are returned from Fusion
      algorithms instead. For example, the <a class="link" href="algorithm/transformation/functions/transform.html" title="transform"><code class="computeroutput"><span class="identifier">transform</span></code></a> algorithm does not actually
      return a transformed version of the o