I had a problem, yesterday, trying to work out what -> meant. I came across it in the Seaside tutorial and couldn't find any reference to it in my various Squeak books.
Fortunately, the Beginners list offered an immediate answer. It is an infix operate for creating an Association. It is a bit like typing 1 @ 1 would return a Point. The answer is obvious, after the fact, but I was confused at the time.
Thinking about why I was confused made me realise that I still hadn't fully understood the concept of objects and messages, or perhaps to put it more accurately, I hadn't understood the fact that there really isn't anything else in Squeak. So, if what you are looking at is not an object, then it has to be a message. And, if it is a message, try typing it into a method finder window and see what it returns.
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