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Mathematica

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  • $\begingroup$ I saw something like that already. It wraps Mean in a lambda function. Am I right? $\endgroup$ Commented Dec 8, 2019 at 16:39
  • $\begingroup$ I'm not 100% sure I know what a lambda function is... the first one operates by placing the argument 1175., 247 where the # is, so that the two numbers are placed into a list (as required by Mean). The second works the opposite, by separating the list argument into its two components (as required by Subtract). $\endgroup$ Commented Dec 8, 2019 at 16:43
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    $\begingroup$ @SylvainLeroux Mathematica's equivalent of a lambda function is referred to as a "Pure" function. See the help on Function for an explanation. $\endgroup$ Commented Dec 8, 2019 at 16:47
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    $\begingroup$ I think the first one should be Mean[{##}]& - otherwise, you will keep only the first argument $\endgroup$ Commented Dec 9, 2019 at 10:45
  • $\begingroup$ You're right @Lukas. I' editing Bill's answer with that. I add en extra explntion of the problem, since one-character edits are not allowed. Feel free to edit that if I was wrong. $\endgroup$ Commented Dec 9, 2019 at 15:22