2015-04-19 22:32:01 +00:00
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Think of haskell functions as regular \emph{mathematical} functions.
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\slidep
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\vspace{\baselineskip}
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\begin{center}
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2015-04-20 13:05:11 +00:00
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\includegraphics*[scale=0.35]{./images/function-machine.png}
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2015-04-19 22:32:01 +00:00
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\end{center}
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\begin{itemizep}
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\item does this function write to the hard drive?
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\item does the output depend on anything else except the input (e.g. time, environment, ...)?
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\end{itemizep}
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\slidep
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\vspace{\baselineskip}
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It's all about \emph{input} and \emph{output} of functions! And that's it. Nothing else to worry about.
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