nse the value denoted by the identifier must be constant in</span></i>
<i><span style='color:#898887;'>// this second case.</span></i>

<b><span style='color:#000000;'>let</span></b> qf = <b><span style='color:#bf0303;'>'</span></b>factorial;
<i><span style='color:#898887;'>// `qf' is different from `factorial' -- it is a data structure representing this</span></i>
<i><span style='color:#898887;'>// function, not the function itself</span></i>

print (<b><span style='color:#bf0303;'>'</span></b><span style=