title: Is there such thing as a left-associative prefix operator or right-associative postfix operator?
body: <p><a href="http://www.cs.man.ac.uk/~pjj/cs211/ho/node2.html#SECTION00024000000000000000">This page</a> says "Prefix operators are <strong>usually</strong> right-associative, and postfix operators left-associative" (emphasis mine).</p>
  
  <p>Are there real examples of left-associative prefix operators, or right-associative postfix operators? If not, what would a hypothetical one look like, and how would it be parsed?</p>