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diff --git a/docs/doc/fold.html b/docs/doc/fold.html index d59caf97..4d73e8c0 100644 --- a/docs/doc/fold.html +++ b/docs/doc/fold.html @@ -151,7 +151,7 @@ </pre> <p>And the operand <code><span class='Function'>+</span><span class='Modifier2'>⟜</span><span class='Function'>÷</span></code> is a quick way to compute a <a href="https://en.wikipedia.org/wiki/Continued_fraction">continued fraction</a>'s value from a list of numbers. Here are a few terms from the continued fraction for <em>e</em>.</p> <a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=K+KfnMO3wrQgMuKAvzHigL8y4oC/MeKAvzHigL804oC/MeKAvzE=">↗️</a><pre> <span class='Function'>+</span><span class='Modifier2'>⟜</span><span class='Function'>÷</span><span class='Modifier'>´</span> <span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>1</span><span class='Ligature'>‿</span><span class='Number'>1</span> -2.71830985915493 +2.7183098591549295 </pre> <h3 id="initial-element"><a class="header" href="#initial-element">Initial element</a></h3> <p>When <code><span class='Function'>𝔽</span></code> isn't just an arithmetic primitive, folding with no initial element can be dangerous. Even if you know <code><span class='Value'>𝕩</span></code> isn't empty, saving you from an "Identity not found" error, the case with only one element can easily violate expectations. Here's a somewhat silly example of a function meant to merge elements of the argument into a single list (<code><span class='Function'>∾⥊</span><span class='Modifier'>¨</span></code> is a much better way to do this):</p> |