Too existential for me... I just click the button... All the best... Liz On Tuesday, September 1, 2015 at 11:41:29 AM UTC-4, Colin Law wrote: > > On 1 September 2015 at 16:33, Elizabeth McGurty <[email protected] > <javascript:>> wrote: > > Very nice! The all important ||= > > Now if I could just convince you of the benefits of inline posting > rather than top posting then I would feel my life was worth while > after all :) > > Colin > > > > > > > On Tuesday, September 1, 2015 at 11:01:57 AM UTC-4, Colin Law wrote: > >> > >> On 1 September 2015 at 15:41, Elizabeth McGurty <[email protected]> > wrote: > >> > And I am also super confused as to the notion of 'memorising'. What > >> > does > >> > that mean? Kids memorise the alphabet and times tables, what does > that > >> > metaphor mean in terms of Ruby and Ruby on Rails? Memorising is a > >> > process of > >> > repeatedly iterating through a series that must eventually be held in > >> > one's > >> > memory. Does Rails have some neural process of educating itself in > >> > neural > >> > memorising? > >> > >> The test filter (which is not actually called that of course, it has a > >> name meaningful in the context of my application) does a fair amount > >> of db lookup, based on the request params, and comes up with a true or > >> false answer. My mod is, in the test filter, to test a class variable > >> (lets call it @test_answer) and if it is nil then to run the db > >> lookups, caculate the answer true or false, save it in @test_answer > >> and return that value. If it is not nil then I just return the value. > >> The result is that the first time it runs it does the lookup, the > >> second time it just returns the answer > >> > >> In practice that just turns into something like > >> def test? > >> @test_answer ||= do_the_lookup_and_calcs() > >> end > >> > >> Colin > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "Ruby on Rails: Talk" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to [email protected] <javascript:>. > > To post to this group, send email to [email protected] > <javascript:>. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/rubyonrails-talk/c98708d7-9d86-40d9-90e8-2e92085cfb59%40googlegroups.com. > > > > > > For more options, visit https://groups.google.com/d/optout. >
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