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dijous, 17. d’abril 2003
essentials motzes, 17.04.2003 21:47h
'patterns and software: essential concepts and terminology' from brad appleton. still on the collecting trial. ... Link (0 comments) ... Comment checks motzes, 17.04.2003 20:44h
ward cunningham's checks pattern language information integrity makes it pretty clear: to be meaningful takes more lines than to accept meaninglessness: Trying to be meaningful: weightedAverageCost | total weight | total := self weightedTotalCost. total isCurrency ifFalse: [^ExceptionalValue reporting: 'N/A']. weight := self totalWeight. (weight isNumber and: [weight isZero not]) ifFalse: [^ExceptionalValue reporting: 'Empty']. ^total / weight Accepting possible meaninglessness: weightedAverageCost ^self weightedTotalCost / self totalWeight 'Output will remain blank because any other output would be an attempt to attach meaning to meaningless behavior. Users will interpret unexpected blanks to mean that inputs do not apply and/or outputs are unavailable.' ... Link (0 comments) ... Comment what is it anyhow motzes, 17.04.2003 20:27h
'Each pattern is a three-part rule, which expresses a relation between a certain context, a problem, and a solution. and 'A pattern is the abstraction from a concrete form which keeps recurring in specific non-arbitrary contexts.' (Dirk Riehle, Heinz Züllighoven)and 'A pattern is a named nugget of instructive information that captures the essential structure and insight of a successful family of proven solutions to a recurring problem that arises within a certain context and system of forces ... a pattern does more than just identify a solution, it also explains why the solution is needed!' (Brad Appleton) ... Link (0 comments) ... Comment ... Next page
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rätsel Daniel Schwenter, Philosophischen und
Mathematischen Erquickstunden, Dritter Theil, 1653 | https://archive.org/details/bub_gb_bGM_AAAAcAAJ
by motzes (22/10/19 19:06)
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