I remember - way back in the dark ages - walking into a music store, picking up a CD, and asking it to buy itself. Every single time, the response was the same: nothing.
On Fri, Apr 16, 2021 at 10:07 AM Tim Mackinnon <tim@testit.works> wrote: > Its comforting to see that other have the same reaction as me - I agree > with the sentiment that you send messages to objects - and the naming of > those messages and their context is important. > > and CD.buy - is at least a message to an object but as others have > commented, it highlights flaws in the context or modelling as it just > doesn't read right. I'd model it different too. > > Phew, I'm not losing it.... > > Tim > > On Fri, 16 Apr 2021, at 2:44 PM, Russ Whaley wrote: > > Wow, I must be missing a whole lot of context in that discussion... > (instant reaction as well, lol) > > - a product (CD, book, etc.) does not 'buy' - it can be bought, sure, but > it has no buying action. Even in another context a CD does not 'play'... > aMusicPlayer.play(aCD). > - However, a customer can 'buy' a product... > > - customer.buy(aCD) -or- > - customer.addToCart(aCD) > - customer.checkOut(aCart) > - Invoice.new(aCart), etc. > > - ... but the CD doesn't DO anything. > > - I get the idea that different products might have different behaviour > when they are 'bought' - but these are, in this example, fulfillment - not > the 'buy' action... > > - aCDstream might be set for download > - aCDphysical might be set to physically pull off a shelf and ship > - aCDcare might send an email on warranty, whatever... but let's name > it better than 'buy' :) > > Tim, thanks for the link - I'm always trying to expand my thinking about > object modeling - discovering cool ways/things others are thinking > about... Now I have to go dust off all my old POS (point of sale, not > piece of s#&t) code and see how poorly I may have modeled those > environments!! > > Thanks for the morning diversion! Cheers. > > On Fri, Apr 16, 2021 at 8:53 AM Esteban Maringolo <emaring...@gmail.com> > wrote: > > I saw a tweet about that, and I think that the example is misleading, > maybe intentionally so. > > I don't think anybody would model it that way, in any case you'd have > aProduct.buy() or aProduct.addToCart(aCart). > > If you think it with the typical dog.bark() it certainly makes more sense > than bark(dog). > > Regards! > > Esteban A. Maringolo > > > On Fri, Apr 16, 2021 at 5:20 AM Tim Mackinnon <tim@testit.works> wrote: > > Hi guys - someone pointed out this article from a UK colleague which seems > to be causing a flurry of discussion - but I always like the insights of > this group. I had an instant reaction when I read it - but curious what > people here think in 2021. > > > https://www.linkedin.com/posts/jasongorman_the-year-is-2021-and-people-still-think-activity-6787650079764303872-SJzz > > Tim > > > > -- > Russ Whaley > whaley.r...@gmail.com > > >
