Kevin, please... just... stop. Your message is of absolutely no help to the original poster and just yet another plug for Scala.
Quit it. -- Cédric On Tue, Oct 12, 2010 at 3:15 PM, Kevin Wright <[email protected]>wrote: > You can't blame Scala for being flexible here! > Seriously, if it wasn't so practical in so many scenarios, do you honestly > think that people would be praising it quite as much as we do? > > Anyway, case classes with named+default parameters DO allow the builder > pattern. Mostly by making it obsolete through the copy method: > > case class Node(x : Int = 0, y : Int = 0, z : Int = 0) > > val n = new Node > val n1 = n copy (x = 1) > val n2 = n1 copy (y = 2) > val n3 = n2 copy (z = 3) > > or daisy-chain the calls: > > val n4 = (new Node) copy (x = 1) copy (y = 2) copy (z = 3) > > It's not the way I'd recommend it though, you're better off using the named > params directly: > > val n5 = Node( > x = 1, > y = 2, > z = 3 > ) > > And do feel free to leave out any params you're not concerned about, they > all have defaults: > > val n6 = Node( > x = 1, > z = 3 > ) > > val n7 = Node( > y = 2 > ) > > At this point, users of JavaFX script should be starting to feel an eerie > sense of familiarity... > > > > > On 12 October 2010 20:59, Casper Bang <[email protected]> wrote: > >> Wow, there's Scala again. Amazing how it somehow always sneaks in. As >> to the topic at hand, I'd suggest submitting a request for >> enhancement. The right people (Tulach etc.) can probably have this >> done in a jiff with a check-box in the existing accessor wizard. >> >> On Oct 12, 9:46 pm, Ricky Clarkson <[email protected]> wrote: >> > Scala's case classes plus named arguments really solve this well, >> > particularly if the calling code can be Scala too. >> > >> > case class Node(x: Float, y: Float) >> > >> > On Tue, Oct 12, 2010 at 8:42 PM, B Smith-Mannschott >> > >> > >> > >> > >> > >> > >> > >> > <[email protected]> wrote: >> > > OK, so we've established that neither Eclipse nor Lombok will do what >> > > the OP needs. Are there any other alternatives? >> > >> > > I found myself needing something very similar only last week. In my >> > > case, it was for a simple immutable value type (using Lombok's >> > > lovely @Data) to which I wanted to add fluent builder style methods, >> > > e.g.: >> > >> > > @Data >> > > class Node { >> > > private final float x; >> > > private final float y; >> > > // Lombok generates getX(), getY(), but not setX(), setY() >> > > // because x, y are final. >> > > // Lombok generates Node(float x, float y) constructor >> > > // since x and y are final. >> > > Node withX(float x) { >> > > return new Node(x, y); >> > > } >> > > Node withY(float y) { >> > > return new Node(x, y); >> > > } >> > > } >> > >> > > I ended up firing up emacs and defining a ad-hoc keyboard macro >> > > to grind out the code for me. Yea! More boilerplate for the next >> > > developer to wade through! huzzah! >> > >> > > How difficult would it be for someone inexperienced with Lombok's >> > > internals to add something like this? >> > >> > > Stuff like this is why I'm glad there's more than just Java on the >> > > JVM. For example, a Lisp (like Clojure) makes this kind of code >> > > generation drudgery easy via its civilized [1] macro support. >> > >> > > [1] where uncivilized == the C preprocessor. >> > >> > > // Ben >> > >> > > On Tue, Oct 12, 2010 at 18:27, Reinier Zwitserloot < >> [email protected]> wrote: >> > >> project lombok can do this without cluttering up your code: >> > >>http://projectlombok.org/(disclaimer: I'm a lombok developer). It >> > >> works in both eclipse and netbeans (and the command line). >> > >> > >> Eclipse has built in support to generate these (in the source menu, >> > >> "generate getters/setters"). I'm fairly sure netbeans has something >> > >> similar, no plugins required. They do actually stick text in your >> > >> source files that you then have to maintain, though, unlike Lombok. >> > >> > >> As far as I know none of these generate the 'return this' style >> > >> setter, because that style of setter does not adhere to the bean >> > >> standard. >> > >> > >> On Oct 12, 5:22 pm, Peter A Pilgrim <[email protected]> wrote: >> > >>> Hi Everyone >> > >> > >>> May be even Tor can help. >> > >> > >>> Has anyone come across a name value pattern plugin for NetBeans or >> > >>> Eclipse IDE? >> > >>> Given a class like this: >> > >> > >>> class Node { >> > >>> private float x; >> > >>> private float y; >> > >>> private float z; >> > >> > >>> } >> > >> > >>> The plugin generates the accessors and builder chain mutators >> > >> > >>> class Node { >> > >>> private float x; >> > >>> private float y; >> > >>> private float z; >> > >> > >>> public float getX() { return x; } >> > >>> public Node setX( float x ) { this.x = x; return this } >> > >>> public float getY() { return x; } >> > >>> public Node setY( float y ) { this.y = y; return this } >> > >>> public float getZ() { return z; } >> > >>> public Node setZ( float z ) { this.z = z; return this } >> > >> > >>> } >> > >> > >>> TIA >> > >> > >> -- >> > >> You received this message because you are subscribed to the Google >> Groups "The Java Posse" group. >> > >> To post to this group, send email to [email protected]. >> > >> To unsubscribe from this group, send email to >> [email protected]<javaposse%[email protected]> >> . >> > >> For more options, visit this group athttp:// >> groups.google.com/group/javaposse?hl=en. >> > >> > > -- >> > > You received this message because you are subscribed to the Google >> Groups "The Java Posse" group. >> > > To post to this group, send email to [email protected]. >> > > To unsubscribe from this group, send email to >> [email protected]<javaposse%[email protected]> >> . >> > > For more options, visit this group athttp:// >> groups.google.com/group/javaposse?hl=en. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "The Java Posse" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<javaposse%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/javaposse?hl=en. >> >> > > > -- > Kevin Wright > > mail / gtalk / msn : [email protected] > pulse / skype: kev.lee.wright > twitter: @thecoda > > -- > You received this message because you are subscribed to the Google Groups > "The Java Posse" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<javaposse%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/javaposse?hl=en. > -- Cédric -- You received this message because you are subscribed to the Google Groups "The 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.
