Monads/Writer monad: Difference between revisions
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// Define a function to create writer monads from the simple functions
auto
{
return [=](double x){return LoggingMonad(f(x), message);};
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// Derive writer versions of the simple functions
auto writerRoot =
auto writerAddOne =
auto writerHalf =
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Result: 1.61803
</pre>
=={{header|EchoLisp}}==
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