1 puts, p, print
3 raise, throw, warn
5 to_s, to_i, to_f, to_sym
6 private, protected
Why is raise, throw and warn that high?
I use raise quite often, sometimes like a debugger statement. It's one of the methods most people take for a keyword when they first see it. I've never seen somebody call it with brackets. throw and warn are just variants that belong into the category.
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