On Tue, Nov 29, 2016 at 09:25:18PM -0800, Martin McClure wrote: > On 11/29/2016 06:48 PM, Bruce Prior wrote: > >I have been away from smalltalk coding for a while. On returning to > >the fold, I often see the use of a right arrow in code. Is this > >something new? > > > >Today in a Teapot app example, I saw, > > > >Teapot on GET: '/welcome' -> 'Hello World!'; start. > > > >What is the arrow for? > > As Sebastian said, #-> is a message that creates an Association, with > the receiver as the key and the argument as the value of the > Association. This has actually been around a very long time, though > perhaps it's getting more widely used these days. It doesn't appear to > be in the Blue Book, but I think it was probably actually in the > Smalltalk-80 image 1 release. > > I'm not *quite* curious enough to verify that by rooting around in my > basement for the machine that actually runs that version and seeing if > it will still power up after all these years. :-) > > Regards, > > -Martin >
It is present in the Squeak 1.13 image of 1996, which I think is fairly close to Blue Book. You can run that original image from this web page: http://try.squeak.org Dave
