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...A general introduction to functional programming using haskell matteo rossi dipartimento di elettronica e informazione politecnico milano elet polimi it in nutshell mathematics function f d r takes an argument and returns value that s all does not affect anything else has no side effects the absence of is key idea behind fact one could program way also classic imperative languages such as c but enforce at least purely pls most fpls allow mixing style some cases can simplify considerably these introductory lectures we present reference language pure available text g hutton cambridge university press first examples mechanism fpl definition double x evaluation through application applying means order result compare inner with outer second typical fragment count total repeat until n there notion variable whose changes execution progresses nor loop basic for repetition fp recursion sum up given by following equation if then alternative seq where xs input computed sequence values from define...