Hi Andy, I may be way off in my understanding of what you are trying to do, if so I apologize ahead of time.
It looks to me like you want to create a method that will answer the Fibonacci value for a given number. Hence your first attempt Integer>>fibonacci: aNumber. Where I expect you returned the Fibonacci value of aNumber. I think you then moved on to wanting to just a message and not having to pass aNumber. This lead to the next attempt with '+'. This is where I think you went a little wrong, '+' actually has a parameter. It normally looks like someNumber + aNumber or 2 + 3. Others have suggested using something like #fib, but didn't explain much more. This is the way to go, unless you really want to use some single character, which you could. If you extend Integer with the #fib method (without the # and no parameter) you should have what you want. All you need to do is use the code you had for Integer>>fibonacci: aNumber and everywhere you had aNumber, replace it with "self", you will be able to send the #fib message to any integer (like 5 fib) and get the Fibonacci value of the integer the #fib message was sent to. I will leave it to others to tell you how to use some special character to replace #fib, if that is really what you want to do. Have fun! Lou >As an experiment, I tried to create a Fibonacci method for Integer. >Initially, I defined it as Integer>>fibonacci: aNumber. However, having >thought about it a bit more I realised that it should probably be a binary >message like '+'. I tried to create it as such, but Squeak wouldn't let me - >even when I copied the code from the '+' method. > >After a bit of head scratching, I decided that '+' was probably a symbol, >and that binary messages are probably limited to using symbols as selectors. >However, I once arrived late to a baseball game (never having seen it played >before), got confused about which team was which, and invented an entirely >new scoring system that pretty much explained the results on the >scoreboard. So, I may be completely wrong about binary selectors! > >If I am right about them requiring to be symbols. Would it be a good idea >for meto make 'fibonacci' a symbol as well? Or would that lead to unintended >problems down the road? > >Cheers >Andy ----------------------------------------------------------- Louis LaBrunda Keystone Software Corp. SkypeMe callto://PhotonDemon mailto:l...@keystone-software.com http://www.Keystone-Software.com _______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners