title: How to call a function in R which I specify via the commandline?
body: <p>How do I do this in <code>R</code>:</p>
  
  <p>I have sourced a function with some name <code>exampleFoo</code> suppose:</p>
  
  <p><code>exampleFoo &lt;- function(a, predefined, signature)</code></p>
  
  <p>Given the character vector <code>exampleFoo</code>, how can I use that to call the function with that name?</p>