Is there a web site that will highlight code to show who Ruby will send
each message to?  I like playing around with parentheses and the ternary
operator, and I want to explore the precedence distinction between {}
and do end.

Some find it unnecessary to remove all implied parentheses and still
strive for one-liners, but I find it makes the code more readible, and
more emulatable.  I think a visual tool for learning these rules could
make Ruby more accessible.

Once that were ready, would it not be a small step to make a tool that
strips the unnecessary parens itself?

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