> Option is a type born to support some constructs, > such as avoiding null.
That's just as correct as saying that array is a type born to support some constructs, such as avoiding declaring 10 variables. I.e., it's not correct. Both Option.none and null can be used to denote that an item is not present, but so can having an empty string, an empty list, the text "undefined" and all sorts of other approaches, some of which might make sense given a scenario, but that doesn't mean Option is like null any more than null is like "", or null is like 0, -1, false, "unknown", NaN, etc. On Thu, Oct 25, 2012 at 3:33 PM, Fabrizio Giudici <[email protected]> wrote: > On Thu, 25 Oct 2012 20:28:49 +0200, Josh Berry <[email protected]> wrote: > >> On Thu, Oct 25, 2012 at 10:58 AM, Fabrizio Giudici >> <[email protected]> wrote: >>> >>> 2. Option is not a Scala thing, is a micro-design pattern. I could like >>> it >>> or not, but being a pattern I think I shouldn't see it at all, or see in >>> all >>> the languages I like. >> >> >> I think this is a key misunderstanding. One I mostly share. Option >> is not a micro design pattern any more than String is. It is a common >> type that is shared in many languages. Same as List or Map. Maybe >> I'm placing more distinction on this than is necessary, but it is >> important. > > > It's a type, but you can't compare it to a String. String is a type born to > model a certain kind of stuff. Sure I can't imagine a different, practical > way to represent text. Option is a type born to support some constructs, > such as avoiding null. > > >> Can you imagine working with a language where String was >> implemented vastly differently than the way it is commonly done? (But >> still called String.) > > > Of course, I however agree with this statement, Option is well defined from > a conceptual point of view and should be the same thing everywhere. > > > > -- > Fabrizio Giudici - Java Architect @ Tidalwave s.a.s. > "We make Java work. Everywhere." > http://tidalwave.it/fabrizio/blog - [email protected] > > -- > You received this message because you are subscribed to the Google Groups > "Java Posse" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/javaposse?hl=en. > -- You received this message because you are subscribed to the Google Groups "Java Posse" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/javaposse?hl=en.
