title: Name for the function with signature: `(a -> a -> b) -> (a -> b)`
body: <p>I wonder whether there is a good name for functions with the following signature and implementation (Haskell-notation):</p>
  
  <pre><code>humble :: (a -&gt; a -&gt; b) -&gt; a -&gt; b
  humble f x = f x x
  </code></pre>
  
  <p>It seems somehow related to <code>fold1</code> (<code>fold</code> with no base case).</p>