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<h4>From physics to Big Data, functional programming, and more.</h4>
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<ahref="/blog/2014/01/30/catamorphisms-in-15-minutes/">

 Catamorphisms in 15 Minutes!</a>
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<p>Let’s say you have a list of numbers. What can you do with it? Find its length, map a function over it, add them up, etc. Wouldn’t it be great if there were <em>one function to rule them all</em>, a function that generalizes what you can do with a list? In many languages, there is a higher-order function called <code>fold</code> that encapsulates a pattern of <strong>structural recursion</strong> over recursive structures: to specify a function on a list, you specify two exhaustive cases: what to do to an empty list, and what to do with any other list. A generalization of <em>this</em> generalization is the notion of a catamorphism, which is what I’m writing about today.</p>


<ahref="/blog/2014/01/30/catamorphisms-in-15-minutes/" class="more-link">More! &rarr;</a>
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<timedatetime="2014-01-30T20:53:57-05:00" pubdatedata-updated="true">Jan 30<span>th</span>, 2014</time></div>


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<aclass='category' href='/blog/categories/haskell/'>Haskell</a>, <aclass='category' href='/blog/categories/algebra/'>algebra</a>, <aclass='category' href='/blog/categories/catamorphism/'>catamorphism</a>, <aclass='category' href='/blog/categories/category/'>category</a>, <aclass='category' href='/blog/categories/functional/'>functional</a>, <aclass='category' href='/blog/categories/functor/'>functor</a>

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<ahref="/blog/2014/01/20/from-coding-to-calculating/">

 From Coding to Calculating</a>
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<p>Like many aspiring software developers and computer scientists, I wanted to improve my art by going through <ahref="http://mitpress.mit.edu/sicp/full-text/book/book.html" title="SICP">Structure and Interpretation of Computer Programs</a>. I fully expected to emerge from it all with Sherlock Holmes-esque abilities in programming. Yeah, that was about 7 years ago. Still, every so often, I’ll do some of the exercises and search online to see how my answers compared to others’.</p>


<ahref="/blog/2014/01/20/from-coding-to-calculating/" class="more-link">More! &rarr;</a>
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<timedatetime="2014-01-20T17:18:10-05:00" pubdatedata-updated="true">Jan 20<span>th</span>, 2014</time></div>


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<aclass='category' href='/blog/categories/2-28/'>2-28</a>, <aclass='category' href='/blog/categories/haskell/'>Haskell</a>, <aclass='category' href='/blog/categories/lisp/'>Lisp</a>, <aclass='category' href='/blog/categories/scheme/'>Scheme</a>, <aclass='category' href='/blog/categories/functional/'>functional</a>, <aclass='category' href='/blog/categories/sicp/'>sicp</a>

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